Understanding Microsoft Azure Fundamentals

Microsoft Azure has become a prominent platform in the cloud computing space, providing a wide range of services to individuals, companies, and organizations globally. It is becoming more and more important for businesses to grasp the foundations of Microsoft Azure as they move their operations to the cloud. The purpose of this article is to give a general overview of Azure, including its essential features, advantages, and the reasons behind its rise to prominence in the cloud computing industry.

What is Microsoft Azure?

Microsoft offers a full-featured cloud computing platform called Microsoft Azure. Computing, storage, networking, databases, machine learning, Internet of Things (IoT), and other services are among the many that it provides. With Azure, users can create, launch, and maintain services and applications via Microsoft’s extensive global data centre network.

Key Components of Microsoft Azure:

• Compute: For high-performance computing (HPC) workloads, Azure offers a variety of computing options, such as virtual machines (VMs), containers, serverless computing with Azure Functions, and Azure Batch.
• Storage: Blob Storage for unstructured data, File Storage for cloud file sharing, Queue Storage for messaging between application components, and Disk Storage for virtual machines (VMs) are just a few of the scalable storage options that Azure provides.
• Networking: Users can establish virtual networks, link load balancers to Azure, connect on-premises data centers to Azure, and guarantee secure communication by utilizing Azure VPN Gateway and Azure ExpressRoute features.
• Databases: Azure offers a range of database services, such as Cosmos DB for globally distributed NoSQL databases, Azure SQL Database for relational databases, Azure Database for MySQL and PostgreSQL, and services like Azure Synapse Analytics and Azure Cache for Redis.
• Identity and Access Management (IAM): Microsoft’s cloud-based identity and access management service, Azure Active Directory (Azure AD), enables users to safely log in and access resources.
• AI and Machine Learning: To create, train, and implement machine learning models, Azure provides AI and Machine Learning services like Azure Machine Learning, Azure Cognitive Services, and Azure Databricks.
• Internet of Things (IoT): Services like Azure IoT Central offer an end-to-end IoT application platform, while Azure IoT Hub facilitates safe and scalable connectivity between IoT devices and the cloud.
• Developer Tools: For continuous integration, delivery, and testing, Azure offers a comprehensive range of developer tools and services, such as Azure DevOps, Visual Studio Team Services, and Azure DevTest Labs.

Benefits of Microsoft Azure:

• Scalability: Azure enables companies to adjust their resource levels in response to demand, guaranteeing peak efficiency and optimum performance.
• Global Reach: Azure allows businesses to deploy applications closer to their users for lower latency and an enhanced user experience. Azure has data centers situated in various regions of the world.
• Security and Compliance: Azure guarantees data protection and regulatory compliance across a range of industries by adhering to industry-standard security practices and compliance certifications.
• Cost-effectiveness: Azure provides pay-as-you-go pricing options that spare companies from up-front capital costs by letting them pay only for the resources they really use.
• Integration: Azure offers a seamless ecosystem for application development and management by integrating with other Microsoft products and services, as well as third-party tools and technologies.

Conclusion:

As a key player in the cloud computing space, Microsoft Azure enables enterprises to grow, innovate, and completely reinvent themselves. For people and companies hoping to take full advantage of cloud computing, knowing the foundations of Azure is crucial. Azure is still the go-to option for cloud computing solutions in a variety of industries thanks to its extensive service portfolio, global presence, and dedication to security and compliance.

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Caching in ASP .NET Core:

Introduction:

Effective data caching techniques are critical to improving the performance of web applications in the modern digital environment, where speed and scalability are critical requirements. The robust caching features of Microsoft’s open-source, cross-platform ASP.NET Core framework can greatly increase the scalability and responsiveness of web applications. We’ll examine the advantages, methods for implementation, and best practices of caching in ASP.NET Core in this article.

 The Advantages of Caching in ASP.NET Core:

Caching stores frequently accessed data temporarily, reducing the need to retrieve it from its original source repeatedly. In ASP.NET Core, caching provides several advantages, including:

• Enhanced Performance: Caching lowers the latency involved in retrieving data from its original source by keeping frequently accessed data in memory, giving users faster response times.
• Decreased Database Load: By providing cached data rather than querying the database for each request, caching helps reduce the strain on the database server and increase system scalability.
• Improved Scalability: ASP.NET Core apps are more responsive and scalable when they use caching to manage more concurrent users and requests without sacrificing performance.

Types of Caching in ASP.NET Core:

Different caching mechanisms that meet different needs and scenarios are supported by ASP.NET Core. Several frequently utilized types of caching include:

• In-Memory Caching: This technique keeps data in the memory of the application so that it is easily accessible to queries made later. For storing small to medium-sized data sets that are accessed frequently, this kind of caching is appropriate.
• Distributed Caching: With distributed caching, data that has been cached can be shared between several applications or even between various web farm servers. Support for distributed caching with providers like Redis, SQL Server, or NCache is integrated into ASP.NET Core.
• Response Caching: This technique allows the entire HTTP response to be cached, including the status codes, HTTP headers, and HTML content that is generated. For content that can be cached at the HTTP level and is static or semi-static, this kind of caching is perfect.

Implementing Caching in ASP.NET Core:

Developers can take the following actions to take advantage of caching in ASP.NET Core:

• Configure Caching Services: Use the AddMemoryCache() or AddDistributedMemoryCache() methods to register caching services for either distributed or in-memory caching in the dependency injection container of the ASP.NET Core application.
• Install Caching Middleware: To enable response caching, add caching middleware to the application’s request processing pipeline by either implementing custom middleware for more granular control or by using the UseResponseCaching() method.
• Decorate Cached Resources: To define caching policies, such as cache duration, cache location, and cache profiles, decorate controller actions or Razor pages with caching attributes like [ResponseCache].

 Best Practices for Caching in ASP.NET Core:

The following best practices should be taken into consideration in order to optimize the advantages of caching while avoiding typical pitfalls:

• Use Caching Wisely: Only store in cache data that is likely to be frequently retrieved or computed at a high cost. Refrain from over-caching or caching frequently changing volatile data.
• Track Cache Performance: To guarantee optimal cache performance and avoid memory-related problems, track cache hit rates, eviction rates, and memory usage.
• Use Cache Invalidation: Use cache expiration policies or manual cache invalidation mechanisms, among other cache invalidation techniques, to guarantee that data in the cache is accurate and current.

 Conclusion:

Caching is a potent method for enhancing ASP.NET Core applications’ responsiveness, scalability, and performance. Developers can greatly lower latency, lessen database load, and improve user experience by utilizing caching mechanisms like in-memory caching, distributed caching, and response caching. To optimize its advantages while averting any potential downsides, caching must be used sparingly and in accordance with best practices. Because caching is a fundamental component of optimization strategies, ASP.NET Core applications can easily scale to meet the demands of contemporary online environments while delivering lightning-fast performance.

Dotnet Course in Chennai with Placement

Unlocking Your DOTNET Software Development Potential:

Do you want to learn about versatile and powerful software development with DOTNET and SQL? There’s no need to look any further! Our Maria Academy is designed to equip you with the skills and knowledge needed to succeed in the fast-paced world of application development.

About DOTNET (.NET):

Microsoft’s.NET framework is a powerful and widely used framework for creating a wide range of applications, including desktop, web, mobile, and cloud solutions. The demand for skilled.NET developers is growing as the technology industry evolves.

About SQL:

SQL, or Structured Query Language, is a programming language designed specifically for managing and manipulating relational databases. It contains commands for querying data, inserting records, updating information, and building database structures. SQL is required for interacting with databases in a variety of applications, as it allows for structured and organized data storage, retrieval, and manipulation. Its syntax is the same across all database management systems, making it a universal database communication language. Whether you’re a developer, data analyst, or database administrator, you’ll need a solid understanding of SQL.

Are you curious about the continued demand for.NET?

You don’t need to search any farther! One of the most widely used web application development frameworks for building dynamic websites is.NET, an open-source web framework. It should come as no surprise that experts with past experience in this field are in high demand today given the industry’s bright future growth prospects. Maintain your.NET proficiency to stay on top of developments!

The.NET framework offers programming guidelines for developing a variety of applications, including web and mobile ones. Numerous programming languages are supported, such as C#, VB.NET, C++, F#, and others. So, code is crucial when working with.NET. Keep trying new things and learning to become a proficient.NET developer!

The main framework for creating Windows-based applications is called.NET. This is because Windows comes with a local framework called.NET that makes it simpler for programmers to create applications. In addition, a lot of programmers find that building web applications in.NET is simpler than in Java.

It is commonly known that the.NET Framework can establish an extremely secure environment for applications. To provide the highest level of protection, it has a range of security features. The integrated Windows authentication system is one of these mechanisms, which makes it simple for developers to create safe and secure applications. The application’s overall security is increased by this authentication system, which guarantees that only authorized users can access it.

Additionally, a collection of cryptography classes that are necessary for safeguarding sensitive data are included in the.NET Framework. Data security is increased by these classes, which make encryption and decryption possible. These cryptography courses can be used by developers to create robust encryption algorithms that efficiently safeguard data both in transit and in storage. This guarantees that private information stays that way and is not accessible to unauthorized parties.

Therefore, the.NET Framework’s many security features allow developers to prioritize data protection and reduce potential security risks when creating applications.

Why Should You Take .NET Online Training?

Cross-Platform Development: .NET Core enables developers to create applications for Windows, Linux, and macOS.

Excellence in Web Development: ASP.NET, a component of the.NET framework, is a leading technology for creating robust and dynamic web applications.

Versatility: Because.NET allows for the creation of a wide range of applications, it is a popular framework for a variety of projects.

Industry Importance: Many large enterprises and organizations rely on.NET to develop scalable and secure applications, creating numerous job opportunities.

What Our Training Provides:

Comprehensive Curriculum: Our training covers all aspects of.NET, from fundamental concepts to advanced topics, preparing you for real-world projects.

Hands-on Projects: Gain practical experience by completing real-world projects and applying what you’ve learned throughout the course.

Flexibility: Our online format allows you to learn at your own pace, accommodating your hectic schedule.

Interactive Learning: To improve your comprehension and get answers to any questions, participate in interactive sessions, debates, and Q&A sessions.

Professional Teachers: Learn from industry experts with extensive.NET development experience and gain valuable insights.

Who should take:

IT specialists seeking professional development.

Aspiring programmers

Web Designers

Software Developers

Come Grow Your Career with Us!

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Python in Web Development

INTRODUCTION:

            Python web development is a popular and adaptable option for creating dynamic websites and web apps. A wide range of frameworks, modules, and tools are available for Python, which makes development easier and enables programmers to design scalable and effective web solutions.

It comprises designing, developing, and maintaining websites with a range of functions and uses by utilizing a variety of technologies, programming languages, and tools.

At its foundation, web development includes two essential aspects:

1. Front-end development

2. Back-end development

Front-end Development:

 

            The visual and interactive components of a website that visitors interact with directly are the focus of front-end development. Using tools like HTML (Hypertext Markup Language), CSS (Cascading Style Sheets), and JavaScript, entails developing the layout, designing the user interface (UI), and implementing the visual components.

Back-end Development:

            On the other hand, back-end development works with a website’s server-side functionality. It entails developing the architecture and logic needed to process data, manage database interactions, and maintain the operation of the website. Programming languages like Python, Ruby, Java, or PHP are used by back-end developers to create the server-side parts of websites.

WEB DEVELOPMENT USING PYTHON:

            The process of developing websites and web applications with the Python programming language is known as Python web development. Python is a widely used and adaptable programming language that is well-known for its ease of use, readability, and extensive library and framework ecosystem.

            Python is used by developers to construct server-side logic for web applications. This involves processing HTTP requests and responses, data storage and retrieval, business logic implementation, and dynamic content rendering.

SEVERAL ADVANTAGES TO USE PYTHON IN WEB DEVELOPMENT:

• Huge and Intense Community:

The Python community is large and vibrant, with many developers contributing to its development and providing assistance. Many tools, frameworks, and resources designed expressly for web development are available from the community. Python is a strong option for web development because of its wealth of community-driven tools and resources, which provide answers to a variety of needs.

• Comprehensive Frameworks and Libraries:

Python has a robust ecosystem of frameworks and tools that make web development chores easier. One of the most well-liked web frameworks for Python, Django, offers a sophisticated and comprehensive toolkit for creating intricate web applications. It is designed using the Model-View-Controller (MVC) architectural paradigm and comes pre-configured with features like URL routing, database ORM (Object-Relational Mapping), and authentication. Another lightweight and adaptable micro-framework that gives developers more control over the components and structure of an application is Flask. These frameworks, as well as others like Pyramid and Bottle, give web development a strong base and increase productivity.

• Adaptability and Performance:

Python is well-known for being performant and scalable, which makes it ideal for managing online applications with heavy traffic. Python frameworks like Django and asyncio can effectively manage concurrent requests and optimize server resources thanks to innovations like asynchronous programming. Furthermore, Python’s integration features make it simple to integrate with other languages, allowing programmers to use high-performance C or C++ libraries as necessary.

• Easy to read and use:

Python’s syntax is intended to be simple to understand and write, focusing on code readability and maintainability. Its simple syntax enables developers to express concepts in fewer lines of code, making development faster and more efficient. Python’s simplicity allows both new and experienced developers to work easily and collaboratively.

• Inclusion and Simplicity:

Python is adaptable for web development and interfaces with other technologies with ease. It supports a wide range of databases, including NoSQL databases like MongoDB and SQL-based databases like MySQL, PostgreSQL, and SQLite.

• Testing and Troubleshooting:

Python has strong testing frameworks that make developing and running tests for web applications easier, such unittest and pytest. Integrated development environments (IDEs) and pdb are two of the efficient debugging tools that enable developers to locate problems and solve them fast.

• Quick Development:

Python’s emphasis on productivity and simplicity makes it possible for developers to create web apps rapidly. Pre-built modules and libraries are readily available, allowing developers to take advantage of pre-existing solutions rather than having to start from scratch. Time-to-market is critical for startups and small-scale ventures, where this speedy development strategy is very helpful.

WEB DEVELOPMENT FRAMEWORKS IN PYTHON:

Python offers several web frameworks to suit different needs and preferences. The following are a few well-known Python web development frameworks:

• Django
• Flask
• Pyramid
• Bottle
• CherryPy
• Tornado

WEB DEVELOPMENT LIBRARIES IN PYTHON:

Python web development provides an abundance of tools and frameworks to improve productivity and improve the development process. The following libraries & tools are frequently used in Python web development:

• Jinja2
• Pydantic
• Redis-py
• PyJWT
• Flask-WTF
• Flask-SQLAlchemy
• Celery
• SQLAlchemy
• Pillow
• Beautiful Soup
• Requests

ROADMAP FOR PYTHON WEB DEVELOPMENT:

A road map for using Python to construct websites that highlights the main ideas and procedures involved:

• Learn the fundamentals of Python:

Learn the syntax, data types, control structures, and functions that are essential to Python programming. To begin started, you can consult books or internet guides.

• Learn JavaScript, HTML, and CSS:

Get a fundamental knowledge of web technologies, like JavaScript for client-side interactivity, CSS for styling, and HTML for markup. These are required to understand and design websites.

• Pick a web Framework:

Choose a Python web framework based on the needs of your project. A few well-liked choices are Pyramid, Flask, and Django.

• Front-end Development:

Develop your web development abilities by being familiar with well-known front-end frameworks and modules like Angular, Vue.js, and React.

• Construction of RESTful API:

Create APIs that provide data and functionality to other apps or front-end interfaces using the web framework of your choice.

• Authentication and Authorization:

Learn how to use the built-in capabilities or extensions of your web framework to develop secure user registration, login, and access control techniques.

• Testing and Troubleshooting:

Become an expert at testing your websites. Find out more about end-to-end, integration, and unit testing. To write and run tests, use tools such as pytest, Python’s Selenium, or the testing frameworks included with your preferred web framework.

• Installation and Hosting:

Find out how to put your web application on a cloud platform or web server. Gain an understanding of ideas like scalability, security considerations, deployment automation, and server setup. For hosting web applications, platforms like Heroku, AWS, or PythonAnywhere are frequently utilized.

CONCLUSION:

            Python is a powerful language that is well-suited for web development, which involves developing websites and web apps. Because of its ease of use, readability, and robust environment, Python is a great option for web development projects. Python offers a strong basis for web development, making it possible for programmers to create feature-rich, scalable websites quickly.

Exposing the Web Applications’ Synergy between Frontend and Backend Development

Introduction:

Frontend and backend development are two essential parts of the intricate and team-based process that goes into creating modern web applications. These two elements combine flawlessly to provide a thorough user experience. The roles, duties, and cooperation between frontend and backend developers in building robust and intuitive web applications will be discussed in this article.

Frontend Development:

User Interface (UI) Design:

Creating the user interface that users interact with is the main focus of frontend development. HTML, CSS, and JavaScript are used by frontend developers to organize content, style elements, and incorporate interactivity into web pages. The objective is to produce a layout that is visually appealing and intuitive, improving the user experience as a whole.

Client-Side Logic:

Frontend developers can implement client-side logic with JavaScript and well-known frameworks like React, Angular, and Vue.js. Managing state, processing user input, and dynamically updating the user interface in response to user input are all included in this. These frameworks make it easier to create single-page applications (SPAs) that offer a more responsive and seamless user experience.

Cross-Browser Compatibility:

Web applications need to function properly on various browsers and devices, which is the responsibility of frontend developers. In order to provide a consistent look and feel regardless of the user’s device or browser, they take compatibility, responsiveness, and user experience into account.

Performance Optimization:

One of the main duties of frontend developers is to optimize the performance of web applications. To improve the application’s overall speed and responsiveness, they concentrate on cutting down on resource consumption, optimizing page load times, and putting strategies like code splitting and lazy loading into practice.

Backend Development:

Server-Side Logic:

Backend development focuses on the application’s server side. Backend developers implement business logic, handle requests, and communicate with databases using server-side programming languages like Python, Java, Node.js, or Ruby. They take care of things like data validation, authorization, and authentication.

Database Management:

Effective data archiving and retrieval is a vital component of backend development. Working with databases, backend developers make sure that data integrity, query optimization, and database design are all done correctly. Among the popular databases are MongoDB, PostgreSQL, and MySQL.

API Development:

Application Programming Interfaces, or APIs, are made by backend developers to facilitate communication between the frontend and backend. APIs facilitate smooth integration and data flow between the client and server by defining the guidelines and protocols for data exchange.

Security:

One of the main concerns for backend developers is security. They put in place safeguards like encryption, secure authentication, and authorization processes to preserve private information and guarantee the web application’s overall security.

Collaboration and Synergy:

Although backend and frontend developers concentrate on different parts of the development process, good teamwork is essential. The smooth interaction of the frontend with the backend and the seamless flow of data between the client and server are ensured by the two teams’ communication. Well-defined APIs, version control systems, and collaboration tools are essential for promoting this kind of cooperation. https://www.softwaretraininginchennai.com/blog/?s=full+stack

Conclusion:

The synergy between frontend and backend development is crucial in the fast-paced world of web development to produce feature-rich, high-quality web applications. Backend developers construct the reliable framework that supports the application, while frontend developers design captivating user interfaces. A smooth and delightful user experience is the outcome of these two domains’ successful cooperation. The landscape of contemporary web applications is being shaped by the ongoing interdependence of frontend and backend development as technology advances.

 

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Exploring New Development Trends in .NET and .NET Core

Introduction:

The field of software development is always changing, and the .NET ecosystem has seen significant shifts recently. Several trends in the .NET and .NET Core frameworks have emerged as developers adjust to new technologies and industry demands. In this piece, we examine the significant patterns that are influencing .NET development both now and in the future.

 .NET 8 and Unified Platform:

Microsoft’s journey towards a unified platform is furthered with the release of .NET 8, which combines the best features of Xamarin, .NET Core, and .NET Framework. By offering a single codebase for applications targeted at various platforms, including Windows, Linux, macOS, iOS, Android, and more, this unified platform streamlines the development process.

 .NET MAUI for Cross-Platform App Development:

Cross-platform application development is increasingly utilizing .NET MAUI (Multi-platform App UI) as the preferred framework. Developers can use a single codebase to create applications that run on Windows, macOS, Android, and iOS by utilizing .NET MAUI. This improves code reuse and streamlines the development process.

Blazor and Web Assembly:

With the release of Blazor Web Assembly, Blazor—the framework for creating interactive web applications with C# and .NET—has undergone development. This makes it possible to run C# code directly within a browser, providing client-side web developers with a strong substitute for JavaScript. Blazor’s Web Assembly integration has become popular for generating rich client-side experiences.

Serverless Computing with Azure Functions:

With Azure Functions setting the standard, serverless computing has become widely used in .NET development. With Azure Functions, developers can create scalable, event-driven applications without having to actively manage server infrastructure. This pattern is consistent with the industry-wide move toward microservices and serverless architectures.

Microservices Architecture and gRPC:

Microservices are still a popular architectural pattern, and gRPC has become the standard for microservices-to-microservices communication. Because of gRPC’s effectiveness, language-neutrality, and bidirectional communication support, it’s becoming more and more common in .NET Core projects to create scalable and effective microservices.

Entity Framework Core Advancements:

The ORM framework for .NET, Entity Framework Core, has been continuously improved. Better performance, new features, and more flexibility in data mapping and querying are all advantageous to developers. Entity Framework Core continues to be an essential part of the .NET ecosystem as businesses aim for effective data access.

DevOps Integration and CI/CD Practices:

The incorporation of DevOps practices into .NET development workflows has become commonplace. Continuous Integration/Continuous Deployment (CI/CD) pipelines automate testing, build processes, and deployment, resulting in faster and more reliable software delivery.

AI and Machine Learning in  .NET:

Artificial intelligence and machine learning capabilities are increasingly being integrated into .NET applications.  .NET developers can use ML .NET, an open-source framework, to seamlessly integrate machine learning models into their applications. This trend reflects the increasing demand for intelligent, data-driven solutions.

Containerization and Docker:

Containerization with Docker has become a standard in .NET development. Docker containers make it easy to package, deploy, and scale applications, which developers appreciate. Container orchestration tools such as Kubernetes help to streamline the management of containerized .NET applications.

Conclusion:

The .NET and .NET Core ecosystems are thriving and constantly evolving to meet the needs of modern software development. As developers embrace trends such as .NET 6, cross-platform development with .NET MAUI, serverless computing, microservices architecture, and emerging technologies such as Blazor Web Assembly, they position themselves to create scalable, efficient, and creative solutions. Staying informed about these trends enables developers to make informed decisions and prepares them for the exciting developments that lie ahead in the world of .NET.

 

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How to Get Ready for a Python Interview

Python has become one of the most popular programming languages, and its widespread use in a variety of industries has resulted in an increased demand for skilled Python developers.

Getting ready for a Python interview requires technical preparation, problem-solving practice, and strategic planning. Here’s a step-by-step guide that will help you prepare effectively.

Understand the Job Requirements:

Begin by carefully reviewing the job description and requirements. Determine the key skills and technologies that the employer is looking for, and tailor your preparation accordingly.

Review Python Basics:

Make sure you understand the fundamental Python concepts, such as data types, loops, conditional statements, functions, and basic file operations. Prepare to write clean, efficient Python code.

Data Structures and Algorithms:

Brush up on basic data structures (lists, dictionaries, and sets) and algorithms. Practice coding challenges on platforms such as LeetCode, HackerRank, and CodeSignal. Concentrate on time and space complexity analysis.

Object-Oriented Programming (OOP):

Understand OOP concepts like encapsulation, inheritance, and polymorphism. Prepare to apply these concepts to real-world problems and explain their significance.

Python Libraries and Frameworks:

Familiarize yourself with Python libraries and frameworks that are relevant to your role. For example, if the job requires web development, learn about Flask or Django. If it involves data science, be familiar with Pandas, NumPy, and scikit-learn.

Database Knowledge:

Review basic SQL queries and learn how Python interacts with databases through libraries such as SQLAlchemy and Django ORM. Understand the differences between various database types and when to use them.

Web Technologies (if applicable):

If the job requires web development, brush up on your HTML, CSS, and JavaScript skills. Learn how Python integrates with front-end technologies and how to build RESTful APIs.

Testing and Debugging:

Practice with testing frameworks such as unittest and pytest. Be familiar with Python debugging tools and techniques like pdb. Recognize the significance of writing testable and debuggable code.

Version Control:

Refresh your understanding of Git and GitHub. Understand basic commands, branching strategies, and how to effectively collaborate with version control.

Soft Skills and Behavioral Questions:

Prepare for soft-skills and behavioral questions. Prepare to discuss your problem-solving approach, teamwork, communication skills, and previous experiences. To structure your responses, follow the STAR method (Situation, Task, Action, Result).

Mock Interviews:

Conduct mock interviews with a friend, mentor, or on online platforms that provide interview practice. To boost your confidence and communication skills, practice real-world interview scenarios.

Review Your Resume:

Prepare to discuss any past projects or experiences listed on your resume. Highlight your accomplishments, obstacles overcome, and the impact of your contributions.

Stay Updated:

Keep up with the latest Python development trends, updates, and best practices. Follow industry blogs, attend webinars, and join relevant forums.

Ask Questions:

Prepare thoughtful questions for the interviewer. This demonstrates your interest in both the company and the position. Questions about the team, projects, and corporate culture are frequently well received.

Final Preparations:

In the days leading up to the interview, review key concepts, practice coding challenges, and get plenty of sleep. Make sure you have a reliable internet connection and a quiet, well-lit environment for the virtual interview.

Remember, preparation is essential for success in a Python interview. Approach each question confidently, demonstrate your problem-solving abilities, and communicate clearly. Good luck!

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How to Get Ready for a Dotnet Interview

Microsoft’s Dotnet framework is widely used for developing robust and scalable applications. Preparing for a Dotnet interview, whether you’re a seasoned developer or a recent graduate, necessitates a thorough understanding of the framework, its components, and best practices. In this article, we’ll go over key areas to concentrate on and offer practical advice to help you succeed in your Dotnet interview.

Understand the Fundamentals:

Before moving on to more advanced topics, make sure you understand fundamental concepts like Common Language Runtime (CLR), Common Type System (CTS), and Common Intermediate Language (CIL). Examine object-oriented programming principles, which are essential for Dotnet development.

Master Core Technologies:

C# Language Proficiency:

C# is the primary language used in Dotnet development, so brush up on it. Prepare to show your understanding of language features, inheritance, polymorphism, and exception handling.

ASP Dotnet and ASP Dotnet Core:

Learn the distinctions between ASP Dotnet and ASP Dotnet Core. Understand the MVC (Model-View-Controller) architecture, as well as routing and middleware.

ADO Dotnet and Entity Framework:

It is critical to have a solid understanding of ADO Dotnet for data access and Entity Framework for object-relational mapping. Prepare to talk about database connectivity, LINQ, and data modelling.

Explore Web Technologies:

Web API and RESTful Services:

Learn how to create and use Web APIs. Learn RESTful principles as well as how to design and implement scalable services.

Front-End Development:

Learn about front-end technologies such as HTML, CSS, and JavaScript. Knowledge of JavaScript frameworks such as Angular or React can be advantageous.

Look into Testing and Debugging in Depth:

Unit Testing:

Understand the significance of unit testing and be acquainted with testing frameworks such as NUnit or xUnit. Understand how to write efficient unit tests for your code.

Debugging Skills:

Demonstrate your ability to efficiently troubleshoot and debug code. Understand how to use Visual Studio’s debugging tools.

Explore Cloud Services:

Azure Services:

Many businesses use Microsoft Azure to host and manage applications. Understand Azure services such as Azure App Service, Azure Functions, and Azure SQL Database.

Security Best Practices:

Authentication and Authorization:

Learn about various authentication mechanisms such as OAuth and OpenID Connect. Understand how to use role-based access control (RBAC) to secure applications.

Secure Coding Practices:

Understand common security flaws and best practices for writing secure code. Learn how to defend against common threats such as SQL injection and cross-site scripting (XSS).

Keep Up with the Latest Trends:

Latest versions updates:

Keep yourself updated on the latest versions of Dotnet, including Dotnet Core and be aware of new features and improvements.

Containerization and Microservices:

Learn about Docker containerization and the concept of microservices. Learn how these architectural patterns can benefit Dotnet applications.

Behavioral and Problem-Solving Questions:

Soft Skills:

Be prepared to answer behavioral questions about your communication, teamwork, and problem-solving abilities.

Coding Challenges:

Exercise your coding skills by solving algorithmic and real-world problems. LeetCode and HackerRank, for example, provide a variety of Dotnet-related challenges.

Conclusion:

Getting ready for a Dotnet interview necessitates a mix of technical knowledge, practical skills, and problem-solving abilities. You’ll be well-equipped to impress your interviewers and land that Dotnet development role if you focus on the key areas mentioned above and stay up to date on the latest trends. Best wishes!

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Overview of C# and DotNet

Introduction:

The synergy between C# and the DotNet framework has become a cornerstone for building a wide range of applications, from desktop software to web services and cloud-based solutions, in the realm of software development. In this article, we’ll look at the capabilities, features, and versatility that C# and DotNet bring to the table, making them a dynamic programming duo.

C#: A Versatile and Modern Language:

A Quick Overview of C#:

Microsoft C# (pronounced “C sharp”) is a modern, object-oriented programming language. It combines the best features of C and C++ with the simplicity of Java, making it an excellent choice for developers looking for a powerful and expressive programming language.

Object-Oriented Paradigm:

C# adheres to the principles of object-oriented programming (OOP), emphasizing encapsulation, inheritance, and polymorphism. This enables developers to write modular, maintainable code, resulting in more efficient software design.

Type Safety and Memory Management:

C# is a statically-typed language, which means that variable types are known at compile time, reducing the likelihood of runtime errors. Automatic memory management via the garbage collector improves the language’s robustness.

Asynchronous Programming:

C# simplifies asynchronous programming with the introduction of the async and await keywords. This is especially important when developing responsive applications that can handle concurrent tasks without blocking.

DotNet: A Unified Development Platform

Introduction to the DotNet Framework:

Microsoft’s DotNet framework is a comprehensive platform for developing, deploying, and running applications. It provides a consistent development environment for a wide range of applications, including web, mobile, desktop, cloud, and gaming.

Common Language Runtime (CLR):

The Common Language Runtime (CLR), which manages the execution of DotNet programs, is at the heart of the DotNet framework. It has functions like automatic memory management, exception handling, and security.

Unified Type System:

The DotNet framework has a unified type of system in which all types, whether built-in or user-defined, derive from a single root (System.Object). This unity promotes interoperability and code reuse across the DotNet ecosystem’s various languages.

Extensive Class Library:

DotNet includes a large class library with pre-written code for common programming tasks. The Base Class Library (BCL) is a library that simplifies development by providing a wide range of functionalities without the need to reinvent the wheel.

Building Applications with C# and DotNet:

Desktop Applications with WPF:

C# is frequently used to develop Windows Presentation Foundation (WPF) applications, which allow for the creation of feature-rich and visually appealing desktop software.

Web Development with ASP DotNet:

ASP DotNet, a component of the DotNet framework, allows developers to use C# to create dynamic and scalable web applications. ASP DotNet provides a strong framework for developing APIs and full-stack web applications.

Cross-Platform Development with DotNet Core and DotNet 5/6/7:

Recent DotNet ecosystem advancements, such as DotNet Core and the subsequent DotNet 5, DotNet 6, and DotNet 7, have expanded C#’s capabilities to embrace cross-platform development. Developers can now create applications that run on Windows, macOS, and Linux.

Mobile App Development with Xamarin:

C# is used in mobile app development by Xamarin, a framework that allows developers to create cross-platform mobile apps for iOS, Android, and Windows using a single codebase.

Conclusion:

C# and DotNet are modern software development pillars, providing a versatile and unified platform for developing a wide range of applications. Whether you are an experienced developer or just starting out, exploring the capabilities of C# and DotNet opens up a world of possibilities. The continuous evolution of these technologies ensures that developers have the tools they need to stay ahead of the ever-changing software development landscape. Remember that the journey is just as rewarding as the destination as you delve deeper into the worlds of C# and DotNet.

 

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Dependency Injection in ASP.NET Core

Building Modular and Testable Applications with Dependency Injection in ASP.NET Core

Introduction:

A key component of developing ASP.NET Core applications that encourages modularity, maintainability, and testability is dependency injection, or DI. In this post, we’ll examine the foundations of dependency injection in ASP.NET Core, as well as its advantages and practical uses for developing organized and expandable applications.

Understanding Dependency Injection:

Dependency injection is a design pattern that assists in the management of dependencies among various components in a software system. It refers to the technique of supplying the objects that a class requires (its dependencies) from outside rather than creating them within the class itself in the context of ASP.NET Core. This method makes classes more modular and testable.

Benefits of Dependency Injection in ASP.NET Core:

1. Modular Code: By injecting dependencies into classes, each class can concentrate on its own functionality without being tethered to the implementation details of its dependencies. As a result, the code becomes more modular and maintainable.

2. Testability: Dependency injection makes unit testing easier by allowing developers to replace real implementations of dependencies with mock or test implementations. This facilitates the isolation and testing of individual components.

3. Extensibility: It is easier to extend an application’s functionality with dependency injection by introducing new components or swapping out existing ones. This is especially useful when evolving and scaling an application.

Implementing Dependency Injection in ASP.NET Core:

1. Service Registration:

Services in ASP.NET Core are registered at application startup in the dependency injection container. Services can be added to the container via the ‘ConfigureServices’ method in the ‘Startup’ class.

public void ConfigureServices(IServiceCollection services)

{

    services.AddTransient<IMyService, MyService>();

    // Add more services...

}

‘IMyService’ is the interface in this example, and ‘MyService’ is the matching implementation. ‘Transient’ means that each time a request is made, a new instance of ‘MyService’ is created.

2. Constructor Injection:

Use the constructor of a class to inject dependencies into it. The necessary dependencies are automatically provided by the DI container when a class instance is created.

public class MyController : Controller

{

    private readonly IMyService _myService;

    public MyController(IMyService myService)

    {

        _myService = myService;

    }

    // Controller actions...

}

3. Using Dependency Injection in Middleware:

Dependency injection can also help middleware components in the ASP.NET Core request processing pipeline. The ‘Invoke’ method can have services injected into it.

public class MyMiddleware

{

    private readonly RequestDelegate _next;

    private readonly IMyService _myService;

    public MyMiddleware(RequestDelegate next, IMyService myService)

    {

        _next = next;

        _myService = myService;

    }

    public async Task Invoke(HttpContext context)

    {

        // Use _myService...

await _next(context);

    }

}

Scopes and Lifetimes of Services:

Several service lifetimes, such as ‘Transient’, ‘Scoped’, and ‘Singleton’, are supported by ASP.NET Core. Managing the lifespan of service instances requires an understanding of these lifetimes.

1. Transient: Whenever an instance is requested, a new one is created.

2. Scoped: Each request generates a single instance. Within the parameters of an HTTP request, it is shared.

3. Singleton: For the duration of the application, only one instance is created.

Best Practices for Dependency Injection in ASP.NET Core:

1. Choose Constructor Injection: For improved readability and maintainability, inject dependencies via the constructor.

2. Employ Interfaces: Write code that checks against interfaces as opposed to specific implementations. This encourages testability and flexibility.

3. Avoid the Service Location Anti-Pattern: Avoid the ‘ServiceLocator’ pattern, which involves retrieving services directly from the container within a class.

4. Register Services as Interfaces: When registering services, use interfaces rather than concrete implementations.

services.AddTransient<IMyService, MyService>();

  Conclusion:

Dependency injection is a powerful design pattern that improves the design, testability, and maintainability of ASP.NET Core applications significantly. Developers can create modular, extensible, and testable applications by leveraging the built-in dependency injection container. Understanding dependency injection principles is critical for developing robust and scalable ASP.NET Core applications.

Database Access in ASP.NET Core using Entity Framework Core

Introduction:

Many web applications depend on database access, which is made easier and more efficient in ASP.NET Core by Entity Framework Core (EF Core). In this post, we’ll examine the foundations of Entity Framework Core and how ASP.NET Core applications can use it to achieve effective and adaptable database access.

Overview of Entity Framework Core:

Entity Framework Core is an object-relational mapping (ORM) framework that enables.NET objects to be used by developers to communicate with databases. Instead of working directly with SQL queries, it allows developers to work with databases using a high-level, object-oriented API.

Entity Framework Core’s key features include:

Model-First Approach: Use C# classes to define your data model, and EF Core will create the corresponding database schema.

LINQ Support: When querying databases, use Language-Integrated Query (LINQ), which makes it easier to express database queries in C# syntax.

Database Migrations: EF Core supports database migrations, allowing for simple schema changes and updates as your application evolves.

Cross-Platform Compatibility: EF Core is designed to work with various database providers, giving you the option of using SQL Server, MySQL, SQLite, and others.

Setting Up Entity Framework Core in ASP.NET Core:

Install the NuGet package for Entity Framework Core:

Install the NuGet package Entity Framework Core in your ASP.NET Core project:

dotnet add package Microsoft.EntityFrameworkCore

Configure Database Provider: Select a database provider (for example, SQL Server) and install the appropriate provider package:

dotnet add package Microsoft.EntityFrameworkCore.SqlServer

Configure the database provider using the ConfigureServices method in your Startup.cs file:

public void ConfigureServices(IServiceCollection services)

{

    services.AddDbContext<ApplicationDbContext>(options =>

        options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

}

Create DbContext:

Make a class that derives from DbContext in order to create DbContext. This class defines DbSet properties for every entity and represents the database context.

public class ApplicationDbContext : DbContext

{

    public DbSet<User> Users { get; set; }

    // Add more DbSet properties for other entities

}

Configuring the Connection String: Open the appsettings.json file and set the database connection string there.

{

  "ConnectionStrings": {

    "DefaultConnection": "YourConnectionString"

  },

  // Other configurations...

}

Working with Entities and DbContext:

Defining Entities:

Make classes in C# that correspond to your entities. EF Core will map to database tables using these classes.

public class User

{

    public int Id { get; set; }

    public string UserName { get; set; }

    public string Email { get; set; }

    // Other properties...

}

CRUD Operations:

In your application code or controllers, use the DbContext to perform CRUD operations:

public class UserController : ControllerBase

{

    private readonly ApplicationDbContext _context;

    public UserController(ApplicationDbContext context)

    {

        _context = context;

    }

    [HttpGet]

    public ActionResult<IEnumerable<User>> GetUsers()

{

        return _context.Users.ToList();

    }

    [HttpPost]

    public ActionResult<User> AddUser([FromBody] User newUser)

    {

        _context.Users.Add(newUser);

        _context.SaveChanges();

        return newUser;

    }

    // Implement other CRUD operations (Update, Delete) as needed...

}

Database Migrations:

With EF Core, you can use migrations to change the structure of your database. To create and implement migrations, execute the following commands:

dotnet ef migrations add InitialCreate

dotnet ef database update

To establish the initial database schema and implement the modifications, these commands produce SQL scripts.

Conclusion:

Entity Framework Core offers a strong and adaptable ORM framework while streamlining database access in ASP.NET Core. Without requiring in-depth SQL knowledge, developers can effectively interact with databases by defining entities, setting up a DbContext, and using LINQ for querying. EF Core provides a dependable and efficient method for database access in ASP.NET Core, regardless of the size of your project—from a small application to a large enterprise system.

 

 

Web API with ASP.NET Core using MVC

Creating a web API with ASP.NET Core using the MVC (Model-View-Controller) pattern entails creating controllers to handle HTTP requests, models to represent data, and routes for the API. A step-by-step guide to creating an MVC web API with ASP.NET Core is provided below.

Step 1 Install the Necessary Software

Check that your machine has the.NET SDK installed.

Step 2 Create a New ASP.NET Core MVC Web API Project

Run the following commands in a terminal or command prompt

dotnet new mvc -n MyMvcWebApi

cd MyMvcWebApi

This will create a new ASP.NET Core MVC project called MyMvcWebApi and navigate to its directory.

Step 3 Explore the Project Structure

Launch your preferred IDE and open the project. Controllers, Models, and Views are among the folders in the project structure.

Controllers In this section, you will define your API controllers.

Models To represent your data, you can create model classes.

Views Although views are not required for an API, this folder is included in the standard MVC structure.

Step 4 Create a Model

To represent your data, create a model class. Create a file called Item.cs in the Models folder, for example

public class Item

{

    public int Id { get; set; }

    public string Name { get; set; }

}

Step 5 Establish a Controller

Add a new file to the Controllers folder, such as ItemsController.cs, to create a controller

using Microsoft.AspNetCore.Mvc;

using System.Collections.Generic;

namespace MyMvcWebApi.Controllers

{

    [Route(api[controller])]

    [ApiController]

    public class ItemsController  ControllerBase

    {

        private static ListItem _items = new ListItem

   {

            new Item { Id = 1, Name = Item 1 },

            new Item { Id = 2, Name = Item 2 },

            new Item { Id = 3, Name = Item 3 }

        };

GET apiitems

        [HttpGet]

        public ActionResultIEnumerableItem Get()

        {

            return _items;

        }

GET apiitems1

        [HttpGet({id})]

        public ActionResultItem Get(int id)

        {

            var item = _items.Find(i = i.Id == id);

            if (item == null)

                return NotFound();

   return item;

        }

         POST apiitems

        [HttpPost]

        public ActionResultItem Post([FromBody] Item newItem)

        {

   newItem.Id = _items.Count + 1;

            _items.Add(newItem);

            return CreatedAtAction(nameof(Get), new { id = newItem.Id }, newItem);

        }

         PUT apiitems1

        [HttpPut({id})]

public IActionResult Put(int id, [FromBody] Item updatedItem)

        {

            var existingItem = _items.Find(i = i.Id == id);

            if (existingItem == null)

                return NotFound();

existingItem.Name = updatedItem.Name;

            return NoContent();

        }

         DELETE apiitems1

        [HttpDelete({id})]

        public IActionResult Delete(int id)

{

            var itemToRemove = _items.Find(i = i.Id == id);

            if (itemToRemove == null)

                return NotFound();

            _items.Remove(itemToRemove);

            return NoContent();

         }

     }

}

Step 6 Run the Program

Enter the following command at the command prompt or terminal

dotnet run

The URL for your API will be http://localhost:5000 or https://localhost:5001. Open an API testing tool such as Postman:

GET Request: To retrieve items, open https://localhost:5001/api/items.
POST Request: To add a new item, submit a POST request with a JSON body to https://localhost:5001/api/items.
PUT Request: To update an item, submit a PUT request with a JSON body to https://localhost:5001/api/items/1.
DELETE Request: To delete an item, send a DELETE request to https://localhost:5001/api/items/1.

Step 7 Explore and Extend

To improve your web API, investigate additional ASP.NET Core MVC features like middleware, authentication, dependency injection, and model binding. Depending on the needs of your application, you can handle various HTTP methods, define more models, and add more controllers.

Developing ASP.NET Core MVC Web Applications:

Introduction:

Creating dynamic and interactive web pages using the ASP.NET Core framework is required when developing ASP.NET Core MVC (Model-View-Controller) web applications. Model, View, and Controller (MVC) is a design pattern that divides an application into three main components: Model, View, and Controller. ASP.NET Core MVC is a lightweight, cross-platform, open-source framework for building modern, scalable web applications.

Here is a step-by-step tutorial for creating ASP.NET Core MVC web applications:

1. Install Prerequisites:

As your development environment, install Visual Studio or use Visual Studio Code.

Install the.NET SDK from the Microsoft website:

https://dotnet.microsoft.com/download

2. Create a new ASP.NET Core MVC project as follows:

Open Visual Studio and choose “Create a new project.”

Select “ASP.NET Core Web App” and then “ASP.NET Core with MVC” as the template.

Configure the project parameters and then click “Create.”

3. Understand the Project Structure:

Look into the project structure to learn about the key components:

Controllers: Controllers are responsible for handling user input and orchestrating interactions between the model and the view.

Views: Present information to the user and collect user input.

Models: Represent the application’s data and business logic.

4. Define Models:

Model classes should be created to represent the data entities in your application.

Data annotations can be used to validate data and define metadata.

public class Product

{

    public int Id { get; set; }

    [Required]

    public string Name { get; set; }

    public decimal Price { get; set; }

}

5. Create Controllers:

To handle user requests and interact with models, create controllers.

Define controller actions to respond to specific HTTP requests.

public class ProductController : Controller

{

    public IActionResult Index()

    {

        // Retrieve and return a list of products

        return View(products);

    }

public IActionResult Details(int id)

    {

        // Retrieve a specific product by id and return it

        return View(product);

    }

}

6. Develop Views:

To define the presentation layer, create view files (.cshtml).

To display dynamic content, use Razor syntax to embed C# code within HTML.

@model List<Product>

<h2>Product List</h2>

<ul>

    @foreach (var product in Model)

    {

        <li>@product.Name - $@product.Price</li>

    }

</ul>

7. Configure Routing:

Define routes in the Startup.cs file to map URLs to controller actions.

app.UseEndpoints(endpoints =>

{

    endpoints.MapControllerRoute(

        name: "default",

        pattern: "{controller=Home}/{action=Index}/{id?}");

});

8. Handle Form Submissions:

In controllers, use the HttpPost attribute to handle form submissions.

[HttpPost]

public IActionResult Create(Product product)

{

    // Validate and save the new product

    return RedirectToAction("Index");

}

9. Implement Data Access:

To interact with databases, use Entity Framework Core or other data access technologies.

10. If desired, include authorization and authentication:

Authenticate and authorize users in accordance with the specifications of your application.

11. Test Your Application:

Run your application locally and verify various scenarios to test it.

12. Publish Your Application:

Publish your ASP.NET Core MVC application to a cloud platform or hosting environment.

Note: Always refer to the official ASP.NET Core documentation for more information on each stage of development: https://docs.microsoft.com/en-us/aspnet/core/

 

Microservices Architecture with DOTNET Core

Introduction:
The ability of microservices architecture to break down large, monolithic applications into smaller, independent services has led to widespread adoption. This article delves into the design principles and implementation strategies for developing microservices with DOTNET Core, Microsoft’s versatile and powerful framework.

Understanding Microservices Architecture:

Microservices is a design style in which an application is made up of loosely coupled, independently deployable services. Each service is intended to carry out a specific business function and communicates with other services via well-defined APIs.

Design Principles:
1. Single Responsibility Principle (SRP): Each microservice should be responsible for a single business capability. This ensures ease of use and maintainability.
2. Decentralized Data Management: Databases belong to microservices. Because of this decentralization, dependencies are reduced and each service is free to select the database technology that best meets its needs.
3. Inter-Service Communication: APIs are used by services to communicate with one another, and they frequently use lightweight protocols such as HTTP/REST or messaging queues. This allows for independence and flexibility in technology stack selection.
4. Fault Tolerance and Resilience: Create services that are resistant to failure. To handle faults gracefully, use mechanisms such as circuit breakers and retries.
5. Continuous Integration and Deployment (CI/CD): Use CI/CD techniques to automate the processes of building, testing, and deployment. This guarantees the delivery of microservices quickly and consistently.
6. Scalability: Microservices can be scaled independently based on demand. By horizontally scaling instances, you can design services to handle varying levels of load.

Implementation with DOTNET Core:
1. Service Development: For each microservice, create a separate DOTNET Core project. Build web APIs with ASP DOTNET Core and consider high-performance communication technologies like gRPC.
2. API Gateway: Set up an API Gateway to manage and route requests to the proper microservices. In Azure, tools such as Ocelot and API Gateway can be used.
3. Service Discovery: To dynamically locate and call services, use service discovery tools such as Consul or Eureka. This is critical for dealing with the fluid nature of microservices.
4. Containerization: Use Docker to containerize each microservice. This ensures consistency across environments and makes deployment easier.
5. Orchestration with Kubernetes: Use Kubernetes to orchestrate and manage containers. Kubernetes makes it easier to deploy, scale, and manage microservices.
6. Logging and Monitoring: Consolidate logging and monitoring. Tools such as the ELK stack (Elasticsearch, Logstash, Kibana) or Application Insights can provide insights into the behavior of microservices.
7. Security: Implement an all-encompassing security strategy. Utilize OAuth for authentication, JWT for token-based authorization, and HTTPS for secure communication.
8. Testing: For each microservice, perform unit testing, integration testing, and end-to-end testing. In this context, tools like xUnit, NUnit, and Postman can be useful.
9. Database Management: Select databases based on the needs of the microservices. Accept polyglot persistence and think about SQL and NoSQL databases.
10. Event-Driven Architecture: Think about using event-driven patterns with message brokers such as RabbitMQ or Apache Kafka. Asynchronous communication between microservices is enabled by events.

Conclusion:
Using DOTNET Core to build microservices necessitates adhering to architectural principles that prioritize independence, scalability, and maintainability. Developers can create a robust microservices ecosystem that meets the demands of modern, scalable applications by using a containerized and orchestrated approach. The combination of DOTNET Core and microservices unleashes the power of agile development, rapid deployment, and efficient scaling, enabling organizations to deliver resilient and scalable applications in today’s dynamic computing landscape.

 

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View in SQL

View in SQL

A view in SQL is a virtual table created from the results of a SELECT query. Views simplify complex queries, encapsulate logic, and provide an abstraction layer over the underlying tables. They can be used to present data in a more meaningful or secure manner than querying the underlying tables directly. Here’s a quick rundown of how to create and use views in SQL:

Creating a View:

The CREATE VIEW statement is used to create a view. The fundamental syntax is as follows:

CREATE VIEW view_name AS SELECT column_name_1, column_name_2, … FROM table_name WHERE condition;

For example, let us create a new table called studentdata using the syntax shown below.

create table studentdata( sno int, sname varchar(100), slocaction varchar(100), smothertongue varchar(100));

Insert some records as well using the syntax shown below.

insert into studentdata values(1, ‘RAM’, ‘CHENNAI’, ‘TAMIL’) insert into studentdata values(2, ‘RAJ’, ‘CHENNAI’, ‘HINDI’) insert into studentdata values(3, ‘RAVI’, ‘HYDERABAD’, ‘TELUGU’) insert into studentdata values(4, ‘RAJESH’, ‘HYDERABAD’, ‘TAMIL’) insert into studentdata values(5, ‘RAJIV’, ‘CHENNAI’, ‘TELUGU’)

Select query syntax can be used to display the table records.

SELECT * FROM studentdata

Create a view using the syntax shown below.

CREATE VIEW TN AS SELECT * FROM studentdata WHERE slocaction = ‘CHENNAI’

Using a View:

After you’ve created a view, you can query it like a regular table with the following syntax:

SELECT * FROM view_name

With reference to the given example,

SELECT * FROM TN

Updating a View:

You can use the ALTER VIEW statement to update views:

ALTER VIEW view_name AS SELECT column_name_1, column_name_2, … FROM table_name WHERE condition;

In Microsoft SQL Server, you can use the CREATE OR ALTER VIEW statement to replace an existing view or create a new one. This is similar to the CREATE OR REPLACE VIEW syntax found in other database systems. Using the preceding example:

ALTER VIEW TN AS SELECT * FROM studentdata WHERE smothertongue = ‘TAMIL’

Dropping a View:                

The DROP VIEW statement is used to remove a view:

DROP VIEW employee_view;

Thinking back to the earlier illustration:

DROP VIEW TN

 

Multiple Views:

Views enable you to create a virtual table in a relational database based on the results of a SELECT query. You can use JOIN operations in your SELECT statement to combine data from multiple tables in a view. Here’s a general guide to creating a view with multiple tables:

Consider the following scenario: you have two tables: customers and orders. The customers table contains information about customers, and the orders table contains information about the orders that these customers have placed.

— Sample customers table CREATE TABLE customers (     CustomerId INT PRIMARY KEY,     CustomerName VARCHAR(50),     Email VARCHAR(50) ); — Sample orders table CREATE TABLE orders (     OrderId INT PRIMARY KEY,     CustomerId INT,     OrderDate DATE,     TotalAmount DECIMAL(10, 2),     FOREIGN KEY (CustomerId) REFERENCES customers(CustomerId) );

Let us also insert some sample records into both tables using the insert query:

INSERT INTO customers VALUES (1, ‘RAM’, ‘ram@mail.com’) INSERT INTO customers VALUES (2, ‘RAJ’, ‘raj@mail.com’) INSERT INTO customers VALUES (3, ‘RAVI’, ‘ravi@mail.com’) INSERT INTO orders VALUES (101, 1, ‘2023/11/02’, 10000) INSERT INTO orders VALUES (102, 2, ‘2023/11/03’, 12000)

Check it out with the following select query:

SELECT * FROM customers SELECT * FROM orders

Let’s now create a view that combines data from both tables:

CREATE VIEW CustomerOrderView AS SELECT     c.CustomerId,     c.CustomerName,     c.Email,     o.OrderId,     o.OrderDate,     o.TotalAmount FROM     customers c JOIN     orders o ON c.CustomerId = o.CustomerId;

The CustomerOrderView view is created in this example by selecting specific columns from both the customers and orders tables. The JOIN clause is used to join rows from both tables using the CustomerId column in common.

After you’ve created the view, you can query it like any other table:

SELECT * FROM CustomerOrderView

Remember that the exact syntax can change based on the database management system (SQL, PostgreSQL, MySQL, etc.) you are using. Depending on the system you are working with, modify the SQL statements as necessary.

Views in ASP.NET MVC

Introduction to Views in MVC:

Views are a fundamental component of the ASP.NET MVC (Model-View-Controller) program that are responsible for presenting data to users. Views are used in ASP.NET MVC to construct the user interface with which users interact with a web application. Views are commonly used to present data to consumers and collect user input.

Here are some important points to remember regarding views in ASP.NET MVC:

Separation of Concerns: ASP.NET MVC encourages concern separation by splitting the application into three primary components: Model, View, and Controller. Views are responsible for rendering the user interface and should focus on presentation concerns, while the Model and Controller handle business logic and data processing, respectively.

Razor Syntax: The Razor view engine, which enables you to combine HTML with C# or VB.NET code to dynamically build the content that will be transmitted to the user’s browser, is commonly used to create views in ASP.NET MVC. The @ sign in Razor syntax is used to incorporate C# code inside HTML markup.

Strongly Typed Views: ASP.NET MVC views have the option to be strongly typed, which identifies them as belonging to a certain model class. This relationship makes it easier to show and work with data by enabling you to access model attributes directly in the view using Razor syntax.

Layouts: Layout pages can be used by views to define a common framework for different views inside the application. This allows you to maintain a uniform look and feel across your online application. Layout pages are often composed of the standard HTML structure, headers, footers, and navigation menus.

Partial Views: Partial views are a method of dividing large views into smaller, reusable components. They are important for developing modular and maintainable user interfaces since they may be rendered within other views.

HTML Helpers: ASP.NET MVC comes with HTML helpers that make it easier to generate forms and HTML elements inside of views. With the aid of these helpers, you may produce HTML code that complies with the model and routing setup of the application.

ViewModels: Apart from models, you can also construct view models, which are objects for data transfer that are specifically designed to meet the requirements of a view. View models give the view all the information it needs to render by combining data from one or more models.

View Engines: While Razor is the most generally used view engine in ASP.NET MVC, you can also utilize Web Forms view engine and custom view engines depending on your tastes and requirements.

ViewBag and ViewData: ViewBag and ViewData are two techniques for transferring information from the controller to the view. ViewData is a dictionary-like container, while ViewBag is a dynamic object. They are often used when you wish to transmit data to the view that is not included in the model.

In summary, views in ASP.NET MVC are in charge of displaying a web application’s user interface. Their dynamic content is rendered using a blend of Razor and HTML syntax. They support partial views for modularization, layout pages for consistency, and strongly typing. In an ASP.NET MVC application, views are essential to achieving a clear separation of concerns.

Setting up a Basic MVC Project in ASP.NET

There are various phases involved in creating a simple ASP.NET MVC (Model-View-Controller) project. Model-View-Controller (MVC) is a design pattern that divides an application into three interrelated components: Models, Views, and Controllers. This split aids in code organisation and maintainability. Here’s a step-by-step tutorial for creating a simple ASP.NET MVC project:

step 1 – Install Visual Studio:

Install Visual Studio, a popular programming environment for ASP.NET apps, if you haven’t already. The free Community edition can be downloaded from the Microsoft website.

step 2 – Create a New Project:

Make a new ASP.NET project first:

Launch Microsoft Visual Studio.

Click on “File” > “New” > “Project…”

Choose “ASP.NET Web Application” from the “Create a new project” window, then click “Next.”

step 3 – Choose Project Template:

Choose the “ASP.NET Core Web Application” template from the “New Project” dialog box. You have the option to select the target framework, name your project, and designate a location. Press “Create.”

step 4 – Configure Your Project:

Click “Create a new ASP.NET framework web application” in the dialog box.

Choose the project template “Web Application (Model-View-Controller)”.

Select “Create” from the menu.

step 5 – Understanding the Framework:

Controllers: Your controller classes are stored in this folder.

Models: This is the location for your model classes.

Views: The views (HTML templates) for your application are stored in this folder.

wwwroot: This is the location for static files such as CSS, JavaScript, and pictures.

step 6 – Create a New Model Class:

Create a new class in your MVC project for your model. You may do this by right-clicking on the “Models” folder in Visual Studio (or your preferred IDE) and selecting “Add” > “Class.” or “using ado.net data entity model method”.

step 7 – Create a Controller:

You may add a new controller to your MVC project by right-clicking the Controllers folder, selecting “Add” > “Controller,” and then following the wizard to construct a basic controller with actions.

step 8 – Create Views:

Create subfolders for your controller actions in your MVC project’s Views folder (e.g., “Home” for the HomeController). Create Razor views (.cshtml files) for your activities within these subfolders.

step 9 – Configure Routing:

The Startup.cs file configures the default routing for ASP.NET MVC. In the Configure function, you can map URLs to controller actions by configuring routes.

step 10 – Run the Program:

Use the Debug menu or press F5 to launch your application. This will start a web server and show your application on a web browser.

step 11 – Test Your MVC Application:

By visiting the relevant URLs, you can access the actions that you created. As an illustration, if your HomeController has an action called “Index,” you can get it at http://localhost:port/Home/Index.

A simple ASP.NET MVC application setup is shown here. Models, controllers, views, and more intricate routing can all be added to this base as your project requires it. To get additional functionality, you can combine different libraries and frameworks with Entity Framework and utilize it to work with databases.

MVC framework in ASP.NET

Introduction to MVC (Model-View-Controller) in ASP.NET:

MVC (Model-View-Controller) is a common architectural paradigm for constructing online applications in ASP.NET. It provides a structured and organized approach to web application development by dividing the application into three interconnected components: the Model, the View, and the Controller. This separation of concerns makes the codebase easier to manage and maintain, promotes code reusability, and improves overall application adaptability.

Let’s take a closer look at each component:

Model: The Model represents the data and business logic of the application. It contains the data on which your application runs as well as the rules that govern that data. It is in charge of retrieving and storing data from a database or other data sources, as well as carrying out data-related tasks.

View: The View is in charge of rendering the user interface and displaying data to the user. Views in an ASP.NET MVC application are normally built in HTML, but they can also contain embedded code (Razor syntax) to show dynamic content. Views are retained as independent files, making the display layer easier to handle.

Controller: The Controller functions as a go-between for the Model and the View. It processes user requests, interacts with the Model to retrieve or change data, and then selects the appropriate View to show the response to the user. It contains the application’s logic for handling HTTP requests and is the starting point for the majority of user interactions.

Main advantages and characteristics of ASP.NET MVC use:

Separation of Concerns: MVC requires a distinct division of responsibilities, which facilitates application understanding, maintenance, and expansion. Developers are able to work independently on various components because to this separation.

Reusability: MVC improves code reusability and reduces redundancy by allowing models, views, and controllers to be often reused in other application components.

Testability: MVC allows for independent unit testing of each component, which improves code quality and facilitates more effective debugging.

Flexibility: MVC enables developers to add to and modify some areas of the program without compromising the functionality of the other sections. It is now simpler to adjust to evolving needs as a result.

Support for Multiple View Engines: ASP.NET MVC offers flexibility in how you render your views by supporting a number of view engines, such as Razor and Web Forms.

 

Usually, you use one of the MVC project templates to create a project in Visual Studio to begin working with MVC in ASP.NET. Models, views, and controllers are all built up in the fundamental framework of your application by using these templates. After that, you may construct on top of this base by defining your views for data display, writing controller actions for user requests, and defining your data models.

In conclusion, MVC is an effective architectural pattern that encourages the creation of web applications in ASP.NET using an organized methodology. Because of its many benefits for code organization, maintainability, and testability, it is a well-liked option among developers creating ASP.NET web applications.

Learn ASP.NET Online

Introduction to ASP.NET

Microsoft created ASP.NET, which stands for Active Server Pages.NET. Thousands of organizations have utilized Microsoft ASP.NET to construct sophisticated, dynamic websites. It is a strong tool for programmers and developers that work on the development of rich and dynamic web apps and websites. ASP.NET is a Microsoft.NET Framework feature that is not limited to script languages; it may also be used by programmers. Microsoft’s Active Server Page was developed in response to the growing need for dynamic webpages.

It includes a Feature library with various ready-to-use methods and web controls for building applications from the ground up. Microsoft often modifies it to stay current with trends. ASP.NET is well-known for its advantages over alternative online development models, in addition to being a pioneering platform. It benefits both the organizations that use it and the developers who take ASP.NET classes.

In the fast-paced world of software development, knowing the most recent technologies and frameworks is critical. NET is one such technology that has seen enormous progress throughout time. As businesses strive to digitize their processes, the demand for knowledgeable.NET developers has skyrocketed. There are numerous online.NET courses available to meet this need and equip potential developers. The article explores into the area of online.NET courses, underlining their benefits, important components, and potential to boost your career.

 

Professionals with ASP.NET expertise benefit from things like:

capable to develop applications with ASP.NET.

Thanks to its complementary design and extensive toolkit, the ASP.NET framework provides wonderful features like drag-and-drop server controls and automated deployment, among others.

less time is spent coding and more time is spent creating large online apps.

The combination of HTML and source code makes it easy to construct and maintain websites.

Find lucrative career opportunities as a developer.

Spend less time and effort writing extra code for complex and large-scale applications to save down on development costs.

All students and freshmen interested in using the Microsoft platform to create modern desktop, web, and service-oriented applications are encouraged to take this course.

 

Pros of Online.NET Courses

The following are advantages for students taking online.NET classes:

Flexibility: With online courses, you may customize your education to fit your schedule and establish your own pace for learning.

Accessibility: No matter where you live in the world, you can access excellent.NET classes.

Interaction: A typical component of online platforms is discussion boards, which allow students to interact with teachers and peers and foster a collaborative learning environment.

Comprehensive Curriculum: Since respectable online courses offer a wide range of.NET topics, you can be confident that you’ll obtain a well-rounded education.

Practical Experience: A lot of courses incorporate practical activities and projects that let you put theory into practice in real-world settings.

All students and freshmen interested in using the Microsoft platform to create modern desktop, web, and service-oriented applications are encouraged to take this course.

To enroll in this course, there are no prerequisites.

 

Why should I study ASP.NET at Maria Academy (Marz Technologies)?

With more than five years of experience, we have taught ASP.NET online to students all around the world. We have also conducted online training courses in  India and other nations. Our knowledgeable instructors will walk you through the process of creating and launching a dynamic website using the ASP.NET tools.

For beginners and intermediate developers, this course module offers practical experience covering everything from installing and setting up Visual Studio for Web and SQL Server Express to creating web form pages.

You will learn about C# programming, advanced C# ideas, OOPs concepts, database design with SQL Server,.NET and.NET Core, and other subjects.

In addition, you will learn how to establish a live project from Microsoft MVPs and Technical Consultants, as well as how to use Visual Studio 2019 for.NET programming.

We provide a variety of training options, such as corporate training, one-on-one training, and live instruction.

 

Our Fundamental Course Module:

Introduction to .NET Framework and its Architecture

C# Language Fundamentals

Microsoft SQL Server

Creating ASP.NET Pages

Programming in ASP.NET

ASP.NET MVC training

DOTNET Online Training in Bangalore

SQL and .NET (pronounced as DOTNET) are two distinct technologies that are frequently used in software development. SQL, short for Structured Query Language, is a powerful programming language specifically designed for managing and manipulating relational databases. It provides developers with a standardized way to perform tasks such as querying data, inserting records, updating information, and creating database structures.

On the other hand, .NET is a versatile software development framework that offers a wide range of tools and libraries for building applications on various platforms. This framework allows developers to create and run applications on different operating systems, including Windows, macOS, and Linux. .NET offers a rich set of features, including a common language runtime (CLR), which enables code written in different programming languages to be executed seamlessly.

While SQL primarily focuses on database management and manipulation, .NET provides a comprehensive platform for developing complete software solutions. By combining both SQL and .NET, developers can build complex applications that efficiently interact with databases and provide a user-friendly interface across multiple platforms. Whether it is working with data or developing complete applications, SQL and .NET play crucial roles in the software development landscape.

 

Are you wondering if .NET is still in demand?

Look no further! .NET is an open-source web framework and one of the most leading web application development frameworks used to create dynamic websites. With high growth prospects in the future, it’s no surprise that people with prior experience in this field are in high demand today. Stay ahead of the curve by keeping your .NET skills sharp!

.NET is a framework that offers programming guidelines for developing a wide range of applications, from web to mobile-based applications. It works with several programming languages including C#, VB.NET, C++, F#, and more. So, yes, coding is required when working with .NET. Keep exploring and learning to become a skilled .NET developer!

.NET is the preferred choice for building windows-based applications. This is because .NET is a local framework included in windows, making it easier for programmers to build applications. Additionally, many programmers find building web applications in .NET easier as compared to Java.

The ability of the .NET Framework to create a highly secure environment for applications is well-known. It provides various security mechanisms that ensure optimal protection. One of these mechanisms is its built-in Windows authentication system, which allows developers to effortlessly create secure and safe applications. This authentication system guarantees that only authorized users can access the application, thereby enhancing its overall security.

Moreover, the .NET Framework also offers a set of cryptography classes that are indispensable for safeguarding sensitive information. These classes provide encryption and decryption capabilities that enhance data security. By utilizing these cryptography classes, developers can implement strong encryption algorithms to effectively protect data during transmission and storage. This ensures that confidential data remains confidential and inaccessible to unauthorized individuals.

Consequently, by incorporating a comprehensive range of security features, the .NET Framework gives developers the ability to prioritize data protection and mitigate potential security risks when building applications.

 

“Unlock Your True Potential with Maria Academy – Unleashing Excellence through Education”

Are you ready to elevate your skills and achieve your goals? Look no further than Maria Academy, the leading training institute dedicated to nurturing talent and empowering individuals to reach their full potential. Our team of seasoned professionals, industry experts, and passionate educators is committed to providing exceptional learning experiences that pave the way for success.

Discover a wide range of courses tailored to meet the demands of today’s competitive market. From professional development programs, technical certifications, to specialized workshops, Maria Academy offers comprehensive training solutions that equip you with the knowledge and skills needed to excel in your chosen field.

Join our vibrant community of learners and engage in interactive sessions that foster collaboration, critical thinking, and innovation. At Maria Academy, we believe in providing more than just theoretical knowledge; we strive to ignite your passion, creativity, and confidence, enabling you to thrive in any professional setting.

Take the first step towards a brighter future. Enrol now at Maria Academy and embark on a transformative educational journey that will shape your career and change your life.”

With Maria Academy’s online course, you can unlock a world of career opportunities in SQL, C#, and Dot Net Technology. Whether you’re an experienced programmer looking to expand your knowledge or a beginner venturing into object-oriented programming, our C#.NET course will take you to the next skill level. Our team of experienced instructors will guide you through the intricacies of C#, helping you discover its limitless potential.

But that’s not all – we also offer comprehensive SQL training to transform you into a proficient database professional. Even advanced engineers can benefit from refreshing their knowledge with our SQL courses. And it’s not just for engineers; business analysts can also capitalize on the opportunity to learn about emerging trends and markets.

At Maria Academy, we take pride in our interactive training sessions. Our enthusiastic trainers will delve into real-world problems and provide practical solutions. What sets us apart is our commitment to hands-on programming, allowing students to improve their skills through practical exercises. Rest assured; our trainers have a minimum of five years of industry experience.

Our meticulously crafted curriculum covers the entire C# learning process. You’ll have the chance to put your programming skills to the test with practical exams and periodic exercises. By the end of the training, we guarantee that you’ll be able to tackle real-world scenarios with confidence.

When it comes to placement assistance, course quality, syllabus coverage, and practical application, we stand tall as the premier C#.NET Training Provider in India. Choose us and unlock your true programming potential.

Full Stack .NET Developer

Full Stack .NET Developer

What is Full Stack .NET Development and who is Full Stack .NET Developer?

Microsoft introduced the.NET framework in 2002 as an open-source tool for full stack developers, but it is also regarded by many as a set of programming rules for web application development.

Although it was originally built to operate on Windows, it was initially viewed as an alternative to Java and PHP. However, its various platforms can be used on a variety of operating systems. The general framework has the advantage of supporting a wide range of programming languages, including C#, Visual Basic, and F#.

The fact that .NET is incredibly user-friendly for full stack developers is one of its key advantages. Its enormous library collection is also one of its key strengths, in addition to its seamless language compatibility. As an open-source technology, it has a sizable community of software developers that have made a wide range of features and capabilities readily accessible for any project involving a web application. It has been heavily utilized in particular for creating web pages and applications.

.NET is also frequently referred to as a web API development platform. It can therefore be used by full stack developers to support both front-end and back-end requirements.

If you’re wondering what a full stack .NET developer is, you’ve come to the correct spot.

The .NET framework is one of several useful tools for developing mobile and web applications.  It was published alongside the ASP.NET server-side web app framework; ASP.NET MVC (Model, View, Controller) is a web application framework.

A full stack .NET developer is a software engineer who is knowledgeable about every part of the.NET development platform. This comprises the front-end and back-end of.NET applications, as well as associated technologies such as databases, online services, and user interfaces.

Full stack .NET developers may see an idea through to its completion and are frequently in charge of the full development process. As a result, they must be well-versed in both the business area and the technical specifics of the .NET platform.

Full stack.NET engineers are in high demand since they can give end-to-end solutions to modern enterprises. If you want to be a full stack.NET developer, you should concentrate on learning C# and ASP.NET.

What Skills Do You Need to Become a Full-Stack .NET Web Developer?

To become a full-stack .NET web developer, you must have a varied set of talents that include both front-end and back-end development, as well as a solid understanding of the .NET framework. The following are the major skills and knowledge areas you will require:

Programming Languages:

C#: The primary language for.NET development is C#. You should be well-versed in its syntax and functionality.

Web Development:

HTML/CSS: To create the structure of web pages and style them, you must grasp HTML and CSS.

JavaScript: Front-end development requires JavaScript. You should be able to utilise it to build interactive web applications.

Front-End Frameworks:

ASP.NET Core MVC: This is a well-known framework for developing web apps on the.NET platform.

JavaScript Frameworks: Knowledge of front-end frameworks such as Angular, React, or Vue.js can be advantageous.

Back-End Development:

ASP.NET Core Web API: This is essential for developing the backend of your web applications, as well as handling HTTP requests and maintaining data.

Entity Framework: A popular ORM (Object-Relational Mapping) tool for.NET database development.

Databases:

SQL: Knowing SQL is required for dealing with relational databases such as SQL Server, PostgreSQL, or MySQL.

Database Design: Understanding database design principles and normalization is essential.

Version Control:

Proficiency with version control systems such as Git for monitoring changes in your codebase and team collaboration.

Web Services:

Knowledge of RESTful APIs, including how to construct and utilize them.

If necessary, knowledge of SOAP and other web service protocols.

Testing:

Unit testing and integration testing are crucial for assuring application reliability.

Deployment and DevOps:

Knowledge of tools such as Docker and containerization.

Pipelines for continuous integration and continuous deployment (CI/CD).

Authentication and Authorization:

Understand how to protect authentication and authorization systems in your applications.

Security:

Knowledge of common security flaws and best practises for safeguarding web applications.

Front-End Tools:

Familiarity with front-end development technologies such as Webpack, Babel, or TypeScript.

Cloud Services (optional):

Knowledge of cloud platforms such as Azure, AWS, or Google Cloud can help you host and scale your apps.

Soft Skills:

Problem-solving skill: The ability to recognise and resolve complicated challenges.

Communication: Effective communication skills are required for working with team members and stakeholders.

Adaptability: Because the technology landscape is constantly changing, being open to learning new technologies is essential.

Project Management (basic):

Understanding project management approaches such as Agile will assist you in working effectively inside development teams.

UI/UX Design (basic):

The development of user-friendly apps can benefit from having a basic understanding of user interface (UI) and user experience (UX) design.

Continuous learning and keeping up with the newest technologies and developments in web development and the .NET ecosystem are requirements for becoming a full-stack .NET web developer. You must also build projects and acquire real-world experience if you want to improve your abilities.

Learn SQL online

Learn SQL online

In our increasingly digital economy, SQL abilities are highly valued. The demand for skilled experts to analyse all that data is increasing along with the number of companies gathering customer information.

An average learner should be able to acquire the fundamentals of SQL and begin using SQL databases in roughly two to three weeks. But you’ll need to become pretty fluent with them before you can start employing them successfully in everyday situations, and that takes time.

SQL is not a conventional programming language, where you would create a series of instructions that would be executed in a specific order. Instead, SQL is a “declarative” language, which means that when you write a query for it, you declare the data you want to get as a result but don’t specify how you want to get it.

SQL is commonly used to create, search for, change, and delete database entries. The more time you invest as a SQL practitioner, the more efficiently and creatively you can use the platform to find the answers your organisation need from the sea of data that is now available.

As we switch between applications, websites, and social media platforms every day, we leave a data trail that is mined by businesses for a variety of purposes. The lack of data analysts, however, renders raw data meaningless.

These experts organise and examine massive data collections using programming languages like SQL. They can then turn this information and correlations into business insights, which in turn can aid organisations in expanding their operations. Every second that goes by, this mountain of data gets bigger, and so does the need for SQL experts. That is the reason why SQL is so common and popular.

SQL is one of the most widely used programming languages in the world. It is used in a range of professions, such as Database administration, Data science, Software engineering, Business analytics and Journalism.

SQL proficiency is required for anyone who deals with data. This language is used by many domains and disciplines to communicate with relational databases.

SQL’s versatility is intended to allow you to query a database in a variety of ways using English-based commands. Because SQL is the most commonly used database language, practically every organisation that needs to store relational data, including big firms like Facebook, Amazon, Google, Uber, Netflix and etc rely on SQL.

SQL is utilised in many different sectors and professions. SQL is still a popular choice for software applications today because it is used by many relational database management systems. SQL offers a wide range of professional applications due to its adaptability and flexibility.

Most programming languages are only used for programming. SQL, on the other hand, is unusual in that it has applications that go beyond standard programming. SQL is used by those in sales and marketing to conduct queries on datasets, which allows them to recognise sales trends and track the success of various marketing campaigns. SQL also has uses in the finance sector. SQL is used by financial analysts to sort through vast amounts of financial data in order to save time. SQL is handy for dealing with vast amounts of structured data.

Top Reasons to Learn SQL:

SQL

• is simple to learn.
• is an effective troubleshooting tool.
• is incredibly flexible and standardised.
• makes it easier to mine your data.
• makes it simple to combine data sets from many sources.
• can handle enormous data sets.
• puts important information at your fingertips.
• demand is at an all-time high.
• developers earn a good living.

If you want to learn SQL, the good news is that there are currently a variety of in-person and online learning alternatives accessible for learners of all levels. We have a Training Centre in Karaikudi for people who like to study in a classroom setting. Furthermore, for individuals who prefer virtual learning, we provide online SQL courses, which are a terrific option. All courses include live tuition from a SQL professional.

C# Web API

C# Web API

Asp.net Web API is a framework that is provided by Microsoft and used to create HTTP services.

ASP.NET Web API is an easy-to-build HTTP web service. To reach a range of clients, including browsers, mobile applications, desktop applications, and IOTs.

The Asp.net web API has two layers.

 1.client layer

 2.server layer

It is accessed by a wide range of clients, including web browsers, mobile applications, and desktop applications, when the client layer makes a request to the web API to get an output response in different formats like JSON or XML.

Http Request = http://servername/apiname?id=101 Http Response = {“Name”,ABC,”Age”:”54”}

What is HTTP?   HTTP – Hyper Text Transfer Protocol means the user gets a different device to get a request, but the output gets the same response server, also called HTTP. HTTP Is used more than providing web page and also strong foundation for the developing API. HTTP is a essential and pervasive protocol

Why to choose ASP.NET Web API?

• Web API is light weight framework for API Development
• Web API has built-in support for standard formats like JSON and XML., and Other Formats.
• Web API is a Content Negotiation
• c#.net Web API maps HTTP Verbs to method names

Features of Web API

Filter: It gives filters to the web application. Action Result: It can keep the action logos client, such as information recovery. Routing: It makes a difference in routing through different APIs. Controller: It gives useful capabilities to the web application. Model: It gives the basic capabilities of the web application.

Types of Web API in C#

1. public
2. partner
3. private
4. Composite

Public APIs 

 A public API is open and available for use by outside developers or businesses; its application, Data, will develop and offer a public API. also called public APIs or external APIs.

Partner APIs

Partner APIs can interface the internal client information system with those outside groups no other APIs are allowed. APIs are generally stronger authentication, authorization, and security machines.

private APIs

Private APIs are used by enterprises to connect system and data APIs for internal use at certain security levels.

Composite APIs

Composite APIs generally combine two or more APIs’ interdependent operations. Composite APIs sometimes improve speed and performance.

C# Web API Sample Programming

Open Visual Studio 2019 > Click Create a new project > Alt+s > ASP.NET Web Application (.NET Framework) > ProjectName  ASP.NET MVC Web API

Create a new Models.cs Application Snapshot as below ,

Models Folder Right click > Add > Click Class > Reference Name Empolyee.cs

Replace the  Empolyee.cs Class with below snippet,

using System; using System.Collections.Generic; using System.Linq; using System.Web;   namespace ASP.NET_MVC_Web_API.Models {     public class Empolyee     {         public int ID { get; set; }         public string Name { get; set; }         public DateTime JoiningDate { get; set; }         public int Age { get; set; }     } }

Controller Folder Right click > Add > Click Controller > Click  Web API

> Click Web API 2 Controller Empty> ControllerName EmpolyeeController.cs

 Create a new Controller.cs Application Snapshot as below

Replace the EmpolyeeController.cs With below Snippet ,

using System; using System.Collections.Generic; using System.Linq; using System.Web.Http; using ASP.NET_MVC_Web_API.Models;   namespace ASP.NET_MVC_Web_API.Controllers {     public class EmpolyeeController : ApiController     {         Empolyee[] employees = new Empolyee[] {             new Empolyee             {                 ID = 1,                 Name = “sam”,                 JoiningDate = DateTime.Parse(DateTime.Today.ToString()),                 Age = 29             },             new Empolyee             {                 ID = 2,                 Name = “Balu”,                 JoiningDate = DateTime.Parse(DateTime.Today.ToString()),                  Age = 36             },             new Empolyee             {                 ID = 3,                 Name = “Michel”,                 JoiningDate = DateTime.Parse(DateTime.Today.ToString()),                 Age = 22             }         };         public IEnumerable<Empolyee> GetAllEmployees()         {             return employees;         }         public IHttpActionResult GetEmployee(int id)         {             var employee = employees.FirstOrDefault((p) => p.ID == id);             if (employee == null)             {                 return NotFound();             }             return Ok(employee);         }     } }

Run the Application and Replace the Url

Output :

SQL Job Support in India

SQL Overview:

SQL is a database management language that includes database creation, database deletion, fetching data rows, modifying, and deleting data rows, and so on.

SQL stands for Structured Query Language, and it is a computer language used to store, manipulate, and retrieve data from relational databases. SQL was created by IBM Computer Scientists in the 1970s and was adopted as a standard by the American National Standards Institute (ANSI) in 1986 and the International Organization for Standardization (ISO) in 1987.

SQL is the industry standard for communicating with Relational Database Systems. SQL is the Standard Database Language used by all Relational Database Management Systems (RDMS) such as MySQL, MS Access, Oracle, Sybase, Informix, Postgres, and SQL Server.

Data is everything nowadays. To comprehend this, you must be familiar with data management. SQL is a language that can be used to understand databases. SQL (Structured Query Language) is the name given to a language used to communicate with databases. The SQL language can be used to edit, pull, and add information to a database. SQL is the foundation of relational databases. More information is available in our SQL online job support.

SQL is widely used because it provides the following benefits:

Users can

• access data stored in relational database management systems.
• describe the data.
• define and manipulate data in a database.
• create and delete databases and tables.
• create views, stored procedures, and functions in a database.
• assign permissions to tables, procedures, and views.
• embed SQL modules, libraries, and pre-compilers within other languages.

SQL Job Assistance:

Do you require SQL Job Support? If you are having trouble completing daily tasks at work due to a lack of practical SQL knowledge, you are most likely looking for an online job support service, which is considered to be the most effective and simplest solution these days. ‘Job Support Online’ offers the best on-the-job support services. No matter what kind of issues you are having with your project tasks, our top IT experts will assist you in dealing with and solving each and every issue on your own. We excel at providing the best on-the-job support services. What exactly are you waiting for? Call today for the best SQL on-the-job support services from anywhere in the world.

Why should you hire our SQL server job support team?

We offer the most effective SQL server job support services. We have built a team of highly experienced and professional IT consultants over the years to provide the best on-the-job support services. Every expert on our team has over a decade of experience in the IT industry, provides professional job support services, and can assist you in completing tasks at your job on time. We aim to provide expert job support to all IT freshers, but we understand that money may be an issue for some. As a result, we charge low prices to make our on-site support services affordable. Furthermore, we work hard to provide the best job support services possible.

Our SQL project assistance programme:

We offer full-time on-the-job support in both online and offline.

We will assign you an expert IT professional to conduct the demo session.

First and foremost, you must explain everything about your project and the technologies used in it to our expert IT professional, and if he/she is satisfied, we will agree to provide you with job support services.

Our IT professionals assist you in managing complex projects on the job.

Fees for job support are non-refundable. So please only pay the fees if you are likely that you require job support services.

Please call us at +91-90427 10472 or +91-95851 77725 for more information on job support and SQL training.

Stored Procedure in SQL Server

• A stored procedure is a precompiled and stored database object that contains a set of SQL statements and procedural logic that can be executed as a single unit. It can be used in a database management system to simplify complex queries and database operations. It is a prepared SQL code that you can save, so the code can be reused over and over again. Stored procedures help improve performance and security, as well as simplify the code.

Here’s a basic example of a stored procedure that accepts two input parameters and returns the sum of those two numbers:

CREATE PROCEDURE AddNumbers @n1 INT, @n2 INT AS BEGIN SET NOCOUNT ON; SELECT @n1 + @n2 AS ‘Sum’; END

In this example, CREATE PROCEDURE is used to define the name of the procedure (AddNumbers) and its input parameters (@n1 and @n2). The AS keyword is used to begin the code block for the stored procedure.

SET NOCOUNT ON is used to prevent the count of the number of rows affected by the stored procedure from being returned.

The code block then calculates the sum of the two input parameters and returns the result using the SELECT statement.

Once the stored procedure is defined, it can be executed by calling its name:

EXEC AddNumbers 2, 3;

This will return the result 5 as the sum of 2 and 3.

Stored Procedure in a Basic CRUD Operation

Now, let us have an idea about using stored procedure in a basic CRUD operation sample.

Let us create a database as follows:

Create database Company

Then create a table in the corresponding database.

CREATE TABLE Employee( EmpCode int, EmpName nchar(100), EmpAge int, EmpSal int)

Inserting data into a table: This stored procedure inserts a new employee record into a table named Employee:

CREATE PROCEDURE AddEmployee @EmpCode int, @EmpName nchar(100), @EmpAge int, @EmpSal int AS BEGIN SET NOCOUNT ON; INSERT INTO Employee(EmpCode, EmpName, EmpAge, EmpSal) VALUES (@EmpCode, @EmpName, @EmpAge, @EmpSal); END

On executing the above snippet, a stored procedure to add the details in the table will be created.

Now, by calling the below query, the table will get added the following 5 datas.

EXEC AddEmployee 1, ‘TOM’, 25, 30000 EXEC AddEmployee 2, ‘RAM’, 25, 30000 EXEC AddEmployee 3, ‘RAJA’, 26, 32000 EXEC AddEmployee 4, ‘SIVA’, 26, 32000 EXEC AddEmployee 5, ‘GOPI’, 25, 30000

Retrieving data from a table: This stored procedure retrieves all the rows from a table named Employee:

CREATE PROCEDURE GetEmployees AS BEGIN SET NOCOUNT ON; SELECT * FROM Employee; END

On executing the above snippet, a stored procedure to get the employee details from the table will be created.

Then by simply calling the below query, the datas stored in the table can be retrieved.

EXEC GetEmployees

Updating data in a table: This stored procedure updates an existing employee record in a table named Employee:

CREATE PROCEDURE UpdateEmployee @EmpCode int, @EmpName nchar(100), @EmpAge int, @EmpSal int AS BEGIN SET NOCOUNT ON; UPDATE Employee SET EmpName = @EmpName, EmpAge = @EmpAge, EmpSal = @EmpSal WHERE EmpCode = @EmpCode; END

On executing the above snippet, a stored procedure to update the details in the table will be created.

Now, by calling the below query, the data with “EmpCode =1” in the table can be updated with new data as follows.

EXEC UpdateEmployee 1, ‘Jerry’, 26, 32000

Deleting data from a table: This stored procedure deletes an existing employee record from a table named Employee:

CREATE PROCEDURE DeleteEmployee @EmpCode int AS BEGIN SET NOCOUNT ON; DELETE FROM Employee WHERE EmpCode = @EmpCode; END

On executing the above snippet, a stored procedure to delete the details in the table will be created.

Now, by calling the below query, the data with “EmpCode=1” in the table can be deleted

EXEC DeleteEmployee 1

These are just a few examples, and there are many more possibilities for what you can do with stored procedures.

SQL & C# Dot Net – Online Training in India:

SQL and DOT NET Technologies:

SQL and DOT NET are two distinct technologies that are frequently used in software development. SQL is an abbreviation for Structured Query Language, a programming language used to manage and manipulate relational databases. DOT NET is a software development framework that allows you to create and run applications on a variety of platforms, including Windows, macOS, and Linux.

SQL is widely used in relational databases such as MySQL, Oracle, and Microsoft SQL Server to manage data. SQL allows developers to use a standardised syntax to create, modify, and query databases. SQL allows for a wide range of operations, such as data insertion, deletion, modification, and retrieval. SQL is also used to analyse data, report on it, and gather business intelligence.

DOT NET is a well-known software development framework that is used to create desktop, web, and mobile applications. DOT NET provides a set of libraries, tools, and runtime environments that simplify the development, testing, and deployment of applications. DOT NET supports a variety of programming languages, including C#, F#, and Visual Basic, and it can be used to create applications for a variety of platforms, including Windows, macOS, Linux, and mobile devices.

SQL and DOT NET, when used together, can provide powerful solutions for managing and manipulating data in applications. For example, a DOT NET application can use SQL to manage its data in a relational database, making it easier to store and retrieve data. Furthermore, DOT NET includes a set of libraries and tools that make it easier to integrate with SQL databases, allowing developers to create applications that can handle large amounts of data while also supporting complex data analysis and reporting.

Future of DOT NET:

Dot Net has a broad scope, and its future appears bright. Dot net is the future of Windows and other operating systems development.

It is a comprehensive framework for developing large enterprise-scale and scalable software applications.

Dot Net is a modern, flexible, fast, and secure technology that integrates well with other technologies.

Our Training Institute – Maria Academy

With our online course, you can broaden your career opportunities in SQL, C#, and Dot Net Technology.

A C# course can take you to the next skill level whether you are an experienced programmer looking to expand your skills and knowledge or you are just getting started in object-oriented programming. Discover what you can do with C# by learning from experienced instructors at Maria Academy.

Our experts will provide you with the SQL training you require to become a database professional. This course is also ideal for advanced engineers who need to refresh their knowledge. SQL courses aren’t just for engineers; they’re also for business analysts who need to learn about new trends and markets.

We will enthusiastically teach you SQL, C# & DOT NET. Our trainers will be more interactive, addressing real-world problems and providing solutions. Students will be able to improve their programming skills through hands-on programming. Trainers must have a minimum of six years of experience. The curriculum was created to cover the entire C# learning process. A practical test and periodic exercises will be provided to help students improve their programming skills. By the end of the training, you should be able to provide a solution for a real-world scenario using your programming skills.

In terms of placement, course, syllabus, and practical, we are the best C#.NET Training Providers in India.

“c++” is the result of the evolution of “c.” C++’s evolution continues. C# is a modern, dependable, and robust programming language. C#.net works with the Microsoft.NET framework. Delegates, Interface, and Abstraction are just a few of the cool features that have propelled C#.net to the top of the world. C# has inherited the best characteristics of its forefathers, including C, C++, and Java. Because of their best features, C# continues to be the solution provider for various hypothetical problems. C#.net was derived from various object-oriented programming extracts.

OOPs Concepts

OOPs Concepts:

It is a programming paradigm that focuses on the use of objects to represent data and behaviors in software applications.

It is based on the concept of “classes” and “objects”.

The main principles of OOPs are Encapsulation, Inheritance, Polymorphism & Abstraction

Classes:
A class is a blueprint for creating objects. It defines the properties and methods that an object of that class will have. For example, a class called “Person” might have properties such as “name”, “age”, and “gender”, and methods such as “walk” and “talk”.

In C#, classes are a fundamental building block of object-oriented programming (OOP). A class is a blueprint or a template that defines the structure and behaviour of a particular type of object.

Here’s an example of a class in C#:

public class Person

{

    public string Name { get; set; }

    public int Age { get; set; }

    public string Address { get; set; }

    public void PrintDetails()

    {

        Console.WriteLine($”Name: {Name}, Age: {Age}, Address: {Address}”);

    }

}

In this example, we have defined a class called Person that has three properties: Name, Age, and Address. These properties are defined using auto-implemented properties, which are shorthand for defining a private field and public getter/setter methods.

The PrintDetails method is a behaviour of the Person class. It is a public method that can be called on an instance of the Person class to print out the person’s details.

To create an instance of the Person class and set its properties, we can do the following:

Person person = new Person();

person.Name = “John”;

person.Age = 30;

person.Address = “123 Main St.”;

And to call the PrintDetails method on the person instance:

person.PrintDetails(); // Output: Name: John, Age: 30, Address: 123 Main St.

In this way, classes in C# allow us to define the structure and behaviour of our objects and create instances of those objects with specific properties and methods.

Objects:

An object is an instance of a class. It represents a specific instance of the class and has its own set of values for the properties defined by the class. For example, an object created from the “Person” class might have a name of “John”, an age of 25, and a gender of “Male”.

In C#, an object is an instance of a class. When we create an instance of a class using the new keyword, we are creating an object of that class.

Here’s an example of creating an object of the Person class we defined earlier:

Person person = new Person();

In this example, person is an object of the Person class. We can access its properties and call its methods using the dot notation:

person.Name = “John”;

person.Age = 30;

person.Address = “123 Main St.”;

person.PrintDetails(); // Output: Name: John, Age: 30, Address: 123 Main St.

Each object of a class has its own set of properties and can have different values for those properties. For example, we can create another object of the Person class with different values for its properties:

Person person2 = new Person();

person2.Name = “Jane”;

person2.Age = 25;

person2.Address = “456 Elm St.”;

person2.PrintDetails(); // Output: Name: Jane, Age: 25, Address: 456 Elm St.

In this way, objects in C# allow us to create multiple instances of a class, each with its own set of properties and values. We can use these objects to represent real-world entities or concepts in our programs and manipulate them by calling their methods and accessing their properties.

Encapsulation:

One of the key features of OOP is encapsulation, which is the concept of bundling data and methods that operate on that data within a single unit. This makes it easier to manage and maintain the code and helps to prevent the data from being accessed or modified by code outside of the class.

Encapsulation is one of the core principles of object-oriented programming (OOP) and refers to the practice of bundling data and the methods that operate on that data within a single unit, called a class, and restricting access to the inner workings of that class from the outside world.

In C#, encapsulation is achieved through access modifiers, which are keywords that determine the level of access that other code has to a particular class member (i.e., fields, properties, methods). C# provides four access modifiers:

public: The member is accessible from any code.

private: The member is accessible only within the same class.

protected: The member is accessible within the same class and any derived classes.

internal: The member is accessible within the same assembly.

Here’s an example of using encapsulation to hide the implementation details of a Person class:

public class Person

{

    private string name;

    private int age;

    private string address;

    public string Name

    {

        get { return name; }

        set { name = value; }

    }

    public int Age

    {

        get { return age; }

        set { age = value; }

    }

    public string Address

    {

        get { return address; }

        set { address = value; }

    }

    public void PrintDetails()

    {

        Console.WriteLine($”Name: {Name}, Age: {Age}, Address: {Address}”);

    }

}

In this example, the fields name, age, and address are marked as private, which means they can only be accessed from within the Person class. However, we’ve also defined public properties Name, Age, and Address that provide access to these fields from outside the class. By using properties, we can control the access to the fields and add logic to the getter/setter methods if necessary.

The PrintDetails method is also a public method that can be called from outside the class to print out the person’s details. However, it does not provide direct access to the internal fields.

By using encapsulation in this way, we can ensure that the internal state of a class is not accidentally or intentionally modified from outside the class, and that changes to the internal implementation of the class do not affect the external code that uses it.

Inheritance:

Inheritance allows a new class to be based on an existing class, inheriting its properties and methods. This can save time and effort in development, as the new class can reuse the code of the existing class.

Inheritance is another core principle of object-oriented programming (OOP) and refers to the ability of a class to inherit properties and behaviours from a parent class. In C#, inheritance is achieved through the : symbol followed by the name of the parent class.

Here’s an example of using inheritance to create a Student class that inherits from the Person class:

public class Student : Person

{

    public int GradeLevel { get; set; }

    public string SchoolName { get; set; }

    public void PrintSchoolInfo()

    {

        Console.WriteLine($”School: {SchoolName}, Grade: {GradeLevel}”);

    }

}

In this example, the Student class inherits from the Person class using the: symbol. This means that the Student class has access to all of the public and protected members of the Person class, including its fields, properties, and methods.

In addition to the inherited members, the Student class defines two new properties, GradeLevel and SchoolName, and a new method, PrintSchoolInfo.

We can create an object of the Student class and set its properties just like we did with the Person class:

Student student = new Student();

student.Name = “John”;

student.Age = 15;

student.Address = “123 Main St.”;

student.GradeLevel = 9;

student.SchoolName = “High School”;

And we can call methods from both the Person and Student classes on the student object:

student.PrintDetails(); // Output: Name: John, Age: 15, Address: 123 Main St.

student.PrintSchoolInfo(); // Output: School: High School, Grade: 9

By using inheritance in this way, we can reuse code from existing classes and create more specialized classes that add new properties and behaviours on top of the existing ones. It also allows us to create a hierarchy of related classes, where each class builds on the properties and behaviours of the classes above it in the hierarchy.

Polymorphism:

Polymorphism allows objects of different classes to be treated as if they are of the same class, by using a common interface. This makes it easier to write code that works with multiple objects, as the code can be written to work with the interface rather than the specific classes.

Polymorphism is another core principle of object-oriented programming (OOP) and refers to the ability of objects of different classes to be used interchangeably in the same context. In C#, polymorphism is achieved through inheritance and interfaces.

There are two main types of polymorphism in C#: compile-time polymorphism and runtime polymorphism.

Compile-time polymorphism, also known as method overloading, refers to the ability of a method to have multiple definitions with different parameter lists. The correct method to call is determined at compile time based on the number and types of arguments passed to the method.

Here’s an example of method overloading in C#:

public class Calculator

{

    public int Add(int x, int y)

    {

        return x + y;

    }

    public float Add(float x, float y)

    {

        return x + y;

    }

}

In this example, the Calculator class defines two Add methods with different parameter types (int and float). Depending on the arguments passed to the Add method, the compiler will choose the appropriate overload at compile time.

Runtime polymorphism, also known as method overriding, refers to the ability of a subclass to provide a different implementation of a method that is already defined in its parent class. The correct method to call is determined at runtime based on the type of the object that the method is called on.

Here’s an example of method overriding in C#:

public class Animal

{

    public virtual void MakeSound()

    {

        Console.WriteLine(“The animal makes a sound.”);

    }

}

public class Dog : Animal

{

    public override void MakeSound()

    {

        Console.WriteLine(“The dog barks.”);

    }

}

In this example, the Animal class defines a virtual MakeSound method that can be overridden by its subclasses. The Dog class overrides the MakeSound method and provides a different implementation that prints “The dog barks.” to the console.

We can create objects of both the Animal and Dog classes and call the MakeSound method on them:

Animal animal = new Animal();

Dog dog = new Dog();

animal.MakeSound(); // Output: The animal makes a sound.

dog.MakeSound(); // Output: The dog barks.

By using polymorphism in this way, we can write code that is more flexible and adaptable to different types of objects, without having to know the exact type of the object at compile time. This makes our code more modular and easier to maintain over time.

Abstraction:

Abstraction is the concept of hiding unnecessary details and complexity from the user, while still providing the necessary functionality. This can make the code easier to use and maintain, as well as improve performance.

Abstraction is a core principle of object-oriented programming (OOP) that refers to the ability to hide the implementation details of a class from the outside world and expose only the relevant features and behaviours through a simplified interface. In C#, abstraction is achieved using abstract classes and interfaces.

An abstract class is a class that cannot be instantiated directly and can only be used as a base class for other classes. It may contain abstract methods, which are declared but not implemented in the abstract class. The subclasses of an abstract class must implement all its abstract methods to be instantiated.

Here’s an example of an abstract class in C#:

public abstract class Shape

{

    public abstract float GetArea();

}

In this example, the Shape class is declared as abstract, which means that it cannot be instantiated directly. It contains an abstract GetArea method, which is declared but not implemented in the abstract class.

Subclasses of the Shape class must provide their own implementation of the GetArea method in order to be instantiated. Here’s an example of a Rectangle class that extends the Shape class and implements the GetArea method:

public class Rectangle : Shape

{

    public float Width { get; set; }

    public float Height { get; set; }

    public override float GetArea()

    {

        return Width * Height;

    }

}

In this example, the Rectangle class extends the Shape class and provides its own implementation of the GetArea method, which calculates the area of a rectangle based on its width and height.

An interface is a contract that specifies a set of methods and properties that a class must implement. It does not contain any implementation code, but rather defines a set of public members that must be implemented by any class that implements the interface.

Here’s an example of an interface in C#:

public interface IPlayable

{

    void Play();

    void Pause();

    void Stop();

}

In this example, the IPlayable interface defines three methods (Play, Pause, and Stop) that must be implemented by any class that implements the interface.

Classes that implement the IPlayable interface must provide their own implementation of these three methods. Here’s an example of a MediaPlayer class that implements the IPlayable interface:

public class MediaPlayer : IPlayable

{

    public void Play()

    {

        Console.WriteLine(“Playing…”);

    }

    public void Pause()

    {

        Console.WriteLine(“Paused.”);

    }

    public void Stop()

    {

        Console.WriteLine(“Stopped.”);

    }

}

In this example, the MediaPlayer class implements the IPlayable interface and provides its own implementation of the Play, Pause, and Stop methods. Any class that implements the IPlayable interface can be used interchangeably with the MediaPlayer class in any context that requires an IPlayable object.

By using abstraction in this way, we can create classes that are more flexible, modular, and easier to maintain over time. We can also create a hierarchy of related classes and interfaces that define a set of common behaviours and features that can be reused and extended in different contexts.

Stored Procedure – SQL

Stored Procedure:

A stored procedure is a collection of Structured Query Language (SQL) statements with a unique name that are stored as a group in a relational database management system (RDBMS) to be reused and shared by multiple programmes.

Stored procedures can access or modify data in a database, but they are not tied to a specific database or object, which provides several benefits.

So, if you have a SQL query that you write repeatedly, save it as a stored procedure and simply call it to execute it.

Additionally, you can send parameters to a stored procedure, allowing it to take action based on the value(s) of the passed parameters.

 

Advantages of Using Stored Procedures:

An essential layer of protection is added by a stored procedure between the user interface and the database. Because end users can add or modify data but not develop procedures, it enables security through data access controls. Since data is entered consistently while using a stored procedure, data integrity is maintained. Because statements in a stored method just need to be written once, productivity is increased.

Stored procedures are preferable to embedding queries in a graphical user interface (GUI). When a problem arises in an application, it is easier to troubleshoot because stored procedures are modular. Stored procedures are also tuneable, so there is no need to change the GUI source code to improve its performance. It is simpler to code stored procedures than it is to build a query using a GUI.

When using stored procedures, network traffic between clients and servers can be reduced Because commands are performed as a single batch of code. This implies that only the call to run the procedure—rather than each individual line of code—is delivered across a network.

 

Stored Procedure in SQL Server:

SQL Server stored procedures can accept input parameters and return multiple values of output parameters; stored procedures in SQL Server programme statements to perform database operations and return a status value to a calling procedure or batch.

Except when a read-only (resource database) is utilised, user-defined procedures can be created in user-defined databases or in all system databases. They are created using Microsoft’s T-SQL or Transact-SQL. There are two sorts of temporary procedures: local and global, both of which are kept in Temporary database. While global procedures are visible to any user once they are generated, local procedures are only available to the user connection that is active at the time. Physically, system procedures are kept in a hidden resource database that comes with SQL Server. They can be found in a user-defined database as well as each system’s SYS schema.

 

Stored Procedure Syntax in SQL:

Syntax To Create Stored Procedure:

CREATE PROCEDURE Procedurename
AS
SQL STATEMENT
GO;

Syntax To Execute Stored Procedure:

EXEC Procedurename;

 

Various types of stored procedures Server SQL:

 

System Defined Stored Procedure: SQL Server already has these stored procedures defined. These are physically stored in a hidden SQL Server Resource Database and logically appear in each user-defined and system-defined database’s sys schema. The sp_ prefix is used to begin this procedure. As a result, we avoid using this prefix when naming user-defined procedures.

Extended Procedure: Extended procedures interface with external programmes to perform various maintenance tasks. These extended procedures are stored in the Master database and begin with the xp_ prefix. Essentially, these are used to automatically call programmes on the server from a stored procedure or a trigger run by the server.

User-Defined Stored Procedure: The user creates these procedures for his or her own actions. Except for the Resource database, these can be created in any system database or in a user-defined database.

CLR Stored Procedure: CLR stored procedures are a type of procedure that is based on the.net framework’s CLR (Common Language Runtime). CLR procedure integration was introduced with SQL Server 2008, allowing procedures to be coded in.NET languages such as C#, Visual Basic, and F#. I’ll go over the CLR stored procedure later.

SQL Server Joins

SQL JOIN

The statement JOIN is used to combine the rows of two or more tables based  on a common column.

The different types of JOIN statement used in SQL are

• INNER JOIN or JOIN – combines the data that matches  in both tables.
• LEFT JOIN or LEFT OUTER JOIN – combines all the datas of left table with the datas from right table that matches.
• RIGHT JOIN or RIGHT OUTER JOIN – combines all the datas of right table with the datas from left table that matches.
• FULL JOIN or FULL OUTER JOIN – combines all the datas either from left or right table whenever there is a match found.

Let us consider an example:

Create a database with a name “StudentResults”

create database  StudentResults

Create a table “studentdetails” with following snippet

CREATE TABLE studentdetails (

regno int,

LastName varchar(255),

FirstName varchar(255),

age int,

dummyno int

);

Let us consider the following datas in table “studentdetails”

Create another table “result” with the snippet

CREATE TABLE result (

dummyno int,

marks int,

result varchar(10)

);

Let us consider the following datas in table “result”

 

INNER JOIN:

Inner Join is the most simplest Join. When inner join keyword is used in two tables, it will create a resulting table with combining the rows of both the tables until the condition is satisfied

For the above considered example, when inner join statement is used as follows

SELECT studentdetails.regno, studentdetails.FirstName, studentdetails.LastName, studentdetails.age, result.marks, result.result

FROM result

INNER JOIN studentdetails

ON studentdetails.dummyno=result.dummyno;

The resulting table will be

LEFT JOIN:

 Left join is also called as Left outer join. When left join keyword is used in two tables, it will create a resulting table with combining all the datas of left table with the datas from right table that matches.

For the considered example, when left join statement is used as follows

SELECT studentdetails.regno, studentdetails.FirstName, studentdetails.LastName, studentdetails.age, result.marks, result.result

FROM studentdetails

LEFT JOIN result

ON studentdetails.dummyno=result.dummyno

ORDER BY studentdetails.regno;

The resulting table will be

RIGHT JOIN:

 Right join is also called as right outer join. When right join keyword is used in two tables, it will create a resulting table with combining all the datas of right table with the datas from left table that matches.

For the considered example, when right join statement is used as follows

SELECT studentdetails.regno, studentdetails.FirstName, studentdetails.LastName, studentdetails.age, result.marks, result.result

FROM studentdetails

RIGHT JOIN result

ON studentdetails.dummyno=result.dummyno

ORDER BY studentdetails.regno;

The resulting table will be

FULL JOIN:

 Full join is also called as Outer join. When full join keyword is used in two tables, it will create a resulting table with combining all the datas either from left or right table whenever there is a match found.

For the considered example, when full join statement is used as follows

SELECT studentdetails.regno, studentdetails.FirstName, studentdetails.LastName, studentdetails.age, result.marks, result.result

FROM studentdetails

FULL OUTER JOIN result

ON studentdetails.dummyno=result.dummyno

ORDER BY studentdetails.regno;

The resulting table will be

SQL Constraints

SQL Constraints

Constraints are the rules that can be applied on the type of data in a table. i.e, it can be used to limit the type of data that can go into a table.

Constraints can be used either when the table is created, or after the table is created.

It can be either applied to a column in a table or to the whole table.

The constraints used in SQL are:

• NOT NULL
• UNIQUE
• PRIMARY KEY
• FOREIGN KEY
• CHECK
• DEFAULT
• CREATE INDEX

 

NOT NULL: if this constraint is used in any column, then it will not allow NULL values in that particular column anymore.

Eg:

CREATE TABLE StudentDetail (

    ID int NOT NULL,

    Name varchar(250) NOT NULL,

    Branch varchar(250) NOT NULL

);

In this command, all the columns are specified with NULL Constraint, so all the columns will allow NULL data in it.

 

UNIQUE: if this constraint is used in any column, then it does not allow to repeat any data or value inn that particular column anymore.

Eg:

CREATE TABLE StudentDetail (

    ID int NOT NULL UNIQUE,

    Name varchar(250) NOT NULL,

    Branch varchar(250) NOT NULL

);

In this command, all the ID column is specified with UNIQUE Constraint, so that the ID cannot be repeated with same data.

 

PRIMARY KEY: This constraint uniquely identifies each record in a table or column and also does  not allow NULL data in  it.

Eg:

CREATE TABLE StudentDetail (

    ID int,

    Name varchar(250) ,

    Branch varchar(250),

PRIMARY KEY (ID)

);

In this command, the PRIMARY KEY Constraint is specified for ID, so that the ID cannot be repeated with same data, also ID cannot be NULL data.

 

FOREIGN KEY: The FOREIGN KEY Constraint references a row in another table, here, the table with the foreign key Constraint is called as the child table, and the table with the primary key is called the parent table.

Eg:

Parent Table::

CREATE TABLE StudentDetail (

    ID int,

    Name varchar(250) ,

    Branch varchar(250),

PRIMARY KEY (ID)

);

Child Table::

CREATE TABLE Marks (

    Mark int NOT NULL,

    Subcode int NOT NULL,

    ID int,

    PRIMARY KEY (Mark),

    FOREIGN KEY (ID) REFERENCES StudentDetail(ID)

);

Here the “Mark” of a student in the “Table Marks” refers to the “ID”  of the student in the “Table StudentDetail”.

 

CHECK: The CHECK Constraint validates condition for new value.

Eg:

CREATE TABLE StudentDetail (

    ID int NOT NULL,

    Name varchar(250) NOT NULL,

    Branch varchar(250) NOT NULL,

CHECK (Branch=’CSE’)

);

In this command, the CHECK Constraints, allows only the CSE as Branch.

 

DEFAULT: This Constraint is used to set a default value for any particular column, if any value is not specified.

Eg:

CREATE TABLE StudentDetail (

    ID int NOT NULL,

    Name varchar(250) NOT NULL,

    Branch varchar(250) DEFAULT ‘CSE’,

);

In this command, the DEFAULT Constraints, fills the Branch as CSE in default when Branch is not specified.

 

CREATE INDEX: This Constraint is used to speed-up the process, i.e it can create and retrieve any data from the database more quickly.

Eg:

CREATE TABLE StudentDetail (

    ID int NOT NULL,

    Name varchar(250) NOT NULL,

    Branch varchar(250) NOT NULL

);

CREATE INDEX ix_Branch

ON StudentDetail (Branch);

Here, in the table StudentDetail, the CREATE INDEX command creates an index ix_Branch using the Branch column.

 

SQL – Programming language

Database:

A database is an organized collection of structured information stored electronically in a computer system. It is controlled by a database management system (DBMS). A database most often contains one or more tables. Each table is identified by a name, the tables contain records with data.

SQL

SQL stands for Structured Query Language.

SQL is a standard language for relational database management system. Unlike Excel, SQL can handle over one million fields of data easily. SQL queries are more flexible than MS Excel formulas.

SQL is widely used in data science and analytics. SQL can be used in all modern relational database management systems like SQL Server, Oracle, mysql, etc.

SQL allows to

• Create new databases, tables and stored procedures.
• Insert, update, delete or retrieve any data from databases.
• Execute queries in a database.

SQL commands is classified as below:

• DDL Commands
• DML Commands
• DQL Commands
• TCL Commands
• DCL Commands

DDL Commands (Data Definition language) – used to define the database schemas, i.e. to create / modify / delete database structures.

• Create – Command is used to create database, tables, and views.
• Drop – Used to drop databases.
• Alter – It is used to alter the structure of the table and databases
• Truncate – It is used to completely remove all records from a table
• Comment – used to add comment in data dictionary
• Rename – used to rename an existing object in database

DML Commands (Data Manipulation Language) – used to manipulate the data present in database.

• Insert: used to insert data into a table
• Update: it updates existing data within a table
• Delete: it deletes all records from a table

DQL Commands (Data Query Language) – used to perform queries on data within scheme objects.

• Select: used to retrieve the data from the database

TCL commands (Transaction Control Language) – Used to maintain consistency of the database and to manage the transactions made by the DML commands.

• Commit: used to permanently save any transaction into the database.
• Rollback: it restores the database to last saved state.
• Savepoint: used to temporarily save a transaction

DCL Commands (Data Control Language) – Used to control access to data stored in a database.

• Grant: allows to perform specified tasks by specified users.
• Revoke: cancels the previously granted or denied permissions.