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Siarhei, Full-Stack Developer

Poland
Last Updated: 21 Nov 2023

Experienced Full-Stack developer with over 5 years of commercial development experience. Skilled in various programming languages and technologies including ASP.NET, .NET, SQL, MSSQL, MongoDb, PostgreSQL, JS, Angular, React, Razor, jQuery, Knockout.js, EF, ADO.NET, MediatR, Web API, Docker, Win Forms, WCF, WPF, Azure, and Swagger. Proficient in software development methodologies, principles, paradigms, and patterns. Strong background in computer science education. Successfully completed multiple projects, including the creation of an MVP for a startup, solution for warehouses and industrial facilities, module for big systems, and a huge enterprise project with desktop, web, and mobile apps. Achievements include architecture design, bug fixing, code refactoring, database management, research and estimation of tasks, and unit testing. Standout profile with technical expertise and domain knowledge in automated information processing systems.

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ASP.NET MVC Pattern

ASP.NET MVC Pattern   5 yr.

.NET

.NET   5 yr.

SQL

SQL   5 yr.

Azure MSSQL

Azure MSSQL   4 yr.

MongoDB

MongoDB   1 yr.

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Nataliia H., Dynamics 365 / Power Apps Engineer

Lviv, Ukraine
Last Updated: 19 Oct 2023

- Full Stack Software Engineer with expertise in developing comprehensive solutions from scratch. - Strong knowledge of all phases of the software development life cycle (SDLC) including project analysis, planning, requirements analysis, architecture design, development, testing, deployment, and documentation. - Proficient in C#, React-Native, React, JavaScript, SQL, Dynamics 365 CE, Power Apps, Model Driven Apps, Power Automate, Jira, SilverLight, WPF, ADO.Net, Apache Subversion (SVN), Entity Framework, Git, Web service, and Windows Form Development. - Experience in data analytics, data engineering, data extraction/ETL, artificial intelligence & machine learning, data mining and management, data science, and data visualization. - Familiarity with Adobe Commerce & Experience, Drupal, Microsoft (AX, Dynamics 365, SharePoint), MuleSoft, Oracle NetSuite, Salesforce, and SAP. - Master's degree in Applied Mathematics and Computer Science from Lviv Ivan Franko National University. - Extensive professional experience in developing CRM systems, banking solutions, web-based platforms, enterprise resource planning systems, and fatigue management systems. - Proficient in .NET, Angular, MS SQL Server, JIRA, MS Visual Studio, IIS, GIT, Source Tree, ReSharper, JavaScript, HTML, CSS, and React-native.

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Dynamics 365 CE

Dynamics 365 CE

Power Apps

Power Apps

.NET

.NET

C#

C#

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Mykola V., Data Architect

Ukraine
Last Updated: 4 Jul 2023

- Skillful Data architect with strong expertise in the Hadoop ecosystem (Clouder/Hortonworks Data Platforms), AWS Data services, and more than 15 years of experience delivering software solutions. - Intermediate English - Available ASAP

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Apache Spark

Apache Spark

Apache Kafka

Apache Kafka

Apache Hadoop

Apache Hadoop

Scala

Scala   2 yr.

Amazon Web Services (AWS)

Amazon Web Services (AWS)

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Artem P., Full-stack Engineer

Eindhoven, Netherlands
Last Updated: 4 Jul 2023

- 9+ years of work experience in software development - Solid knowledge of Microsoft .Net Framework, C#, JavaScript - Understanding of OOD/OOP/SOA concepts and design patterns -Skills in designing applications architecture and technical research - Experience both in front-end and back-end development

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JavaScript

JavaScript

.NET

.NET

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Yurii K., .NET Software Engineer

Lviv, Ukraine
Last Updated: 4 Jul 2023

- .NET Software Engineer with 4 years of software development experience in different domains (FinTech, Real Estate, E-Commerce). - The biggest part of the experience is related to the .NET platform - Upper-Intermediate English - Available from 11.07.2022

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.NET

.NET

C#

C#

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Table of Contents

Cases when ADO.NET does not work

  1. Unsupported Data Sources: ADO.NET may not work when trying to access data from unsupported data sources. Although ADO.NET provides support for a wide range of databases, there are certain data sources that may not be compatible. For example, if you are trying to connect to a non-relational database like MongoDB or a cloud-based storage service that does not have a specific ADO.NET provider, you may encounter difficulties in using ADO.NET.
  2. Missing or Incompatible ADO.NET Providers: ADO.NET relies on data providers to establish connections and interact with different databases. If a required ADO.NET provider is missing or incompatible with the version of ADO.NET you are using, you may face issues. For instance, if you are using an older version of ADO.NET and trying to connect to a newer version of a database that requires an updated provider, it may not work as expected.
  3. Network Connectivity Issues: ADO.NET requires a stable network connection to establish communication with the database server. If there are network connectivity issues, such as a firewall blocking the required ports, or if the database server is not accessible due to network restrictions, ADO.NET may not be able to establish a connection to the database.
  4. Incorrect Connection String: ADO.NET relies on connection strings to specify the necessary information to establish a connection to a database. If the connection string is incorrect or missing essential details like server address, username, password, or database name, ADO.NET will not be able to establish a successful connection.
  5. Insufficient Permissions: ADO.NET requires appropriate permissions to access and manipulate data in a database. If the user account used to establish the ADO.NET connection does not have the necessary permissions, you may encounter errors or restrictions when attempting to perform database operations.
  6. Concurrency Issues: ADO.NET provides concurrency control mechanisms to handle multiple users accessing and modifying the same data simultaneously. However, if the application does not properly handle concurrency or if there are conflicts in the way data is being modified, ADO.NET may not function correctly.

TOP 10 ADO.NET Related Technologies

  • Languages

    ADO.NET software development primarily relies on the following languages:
    – C#: A powerful and widely-used language for building .NET applications.
    – VB.NET: Another popular language for .NET development, known for its simplicity and ease of use.
    – F#: A functional-first language that is gaining popularity in the .NET ecosystem.
    – SQL: Although not a programming language, SQL is essential for working with databases in ADO.NET.

  • .NET Framework

    The .NET Framework forms the foundation for ADO.NET software development. It provides a comprehensive set of libraries and tools for building Windows applications, web applications, and services. The latest version, .NET Framework 4.8, offers improved performance, security, and compatibility.

  • ADO.NET Data Providers

    ADO.NET relies on data providers to connect to different databases. Some popular ADO.NET data providers include:
    – SQL Server: Microsoft’s flagship relational database management system.
    – Oracle: A widely-used enterprise database solution.
    – MySQL: An open-source database management system.
    – PostgreSQL: A powerful and feature-rich open-source database.
    – SQLite: A lightweight, file-based database engine.

  • Entity Framework

    Entity Framework is an object-relational mapping (ORM) framework that simplifies data access in ADO.NET. It provides a high-level abstraction over the underlying database, allowing developers to work with entities and relationships instead of writing raw SQL queries. With Entity Framework, developers can focus on the business logic without worrying about low-level database operations.

  • LINQ

    Language Integrated Query (LINQ) is a powerful feature in ADO.NET that enables developers to write queries directly in their programming language (e.g., C# or VB.NET) instead of using SQL. LINQ offers a unified syntax for querying and manipulating various data sources, including databases, collections, and XML. It provides compile-time checking and intellisense support, resulting in more readable and maintainable code.

  • ASP.NET

    ASP.NET is a web development framework that integrates seamlessly with ADO.NET. It allows developers to build scalable and secure web applications using technologies like ASP.NET Web Forms, ASP.NET MVC, or ASP.NET Core. ASP.NET provides built-in support for data binding and data access, making it easier to retrieve and display data from databases.

  • Visual Studio

    Visual Studio is the preferred integrated development environment (IDE) for ADO.NET software development. It offers a rich set of tools and features for designing, coding, debugging, and deploying .NET applications. Visual Studio provides excellent support for ADO.NET development, including visual designers for database schema, data binding, and query building.

TOP 13 Tech facts and history of creation and versions about ADO.NET Development

  • ADO.NET (ActiveX Data Objects for .NET) is a data access technology introduced by Microsoft in 2002.
  • It was created as part of the .NET Framework, providing a way for developers to interact with data sources such as databases.
  • ADO.NET was designed to be a successor to the earlier ADO (ActiveX Data Objects) technology.
  • One of the key features of ADO.NET is its disconnected data architecture, which allows data to be retrieved from a data source and then manipulated independently of the connection.
  • ADO.NET introduced the concept of Data Providers, which are components that provide access to specific data sources such as SQL Server, Oracle, or OLE DB.
  • The initial release of ADO.NET included two data providers: the SQL Server Data Provider and the OLE DB Data Provider.
  • In 2006, Microsoft released ADO.NET 2.0, which introduced several new features including support for LINQ (Language Integrated Query).
  • ADO.NET 2.0 also introduced the Entity Framework, a data access technology that provides an object-oriented approach to accessing data.
  • With the release of .NET Framework 3.5 in 2007, ADO.NET gained support for the ADO.NET Entity Data Model (EDM), which allows developers to define a conceptual model for their data.
  • In 2010, Microsoft released ADO.NET Entity Framework 4.0, which included improvements such as support for Code First development and the ability to create POCO (Plain Old CLR Object) classes.
  • In 2016, ADO.NET Entity Framework 6.0 was released, introducing new features such as support for async and await programming patterns.
  • ADO.NET continues to be actively developed and maintained by Microsoft, with the latest version being ADO.NET Core, which is designed for use with .NET Core.
  • ADO.NET Core provides cross-platform support and includes improvements in performance and scalability.

Hard skills of a ADO.NET Developer

As an ADO.NET Developer, your hard skills play a crucial role in your success and proficiency in working with this technology. Here are the hard skills required for ADO.NET Developers at different levels:

Junior

  • C# Programming: Proficient in C# programming language to develop ADO.NET applications.
  • ADO.NET Basics: Familiarity with ADO.NET framework, including data providers, data access components, and database connectivity.
  • SQL: Knowledge of SQL queries and database management to interact with databases using ADO.NET.
  • Data Binding: Understanding of data binding concepts to connect data sources with UI components.
  • Error Handling: Ability to handle exceptions and errors effectively in ADO.NET applications.

Middle

  • Advanced ADO.NET: In-depth knowledge of ADO.NET framework, including complex data access scenarios, transaction management, and performance optimization.
  • Database Design: Proficiency in database design principles and normalization to create efficient database schemas.
  • Debugging: Strong debugging skills to identify and resolve issues in ADO.NET applications.
  • Entity Framework: Experience with Entity Framework for object-relational mapping and simplified data access.
  • Web Services: Understanding of integrating ADO.NET with web services for data exchange.
  • Unit Testing: Familiarity with unit testing frameworks to ensure the quality of ADO.NET code.
  • Version Control: Knowledge of version control systems like Git to manage source code effectively.

Senior

  • Performance Optimization: Expertise in optimizing ADO.NET code for better performance, including query optimization and caching techniques.
  • Data Security: Deep understanding of data security principles and techniques to secure data in ADO.NET applications.
  • Database Administration: Proficient in database administration tasks such as backup and recovery, database tuning, and monitoring.
  • Code Review: Ability to perform code reviews and provide constructive feedback to junior developers.
  • Scalability: Experience in designing scalable ADO.NET applications to handle large volumes of data and concurrent users.
  • Architectural Design: Knowledge of software architecture principles and patterns to design robust and maintainable ADO.NET solutions.
  • Performance Testing: Proficiency in performance testing tools and methodologies to identify bottlenecks and optimize ADO.NET applications.
  • Leadership: Strong leadership skills to guide and mentor junior developers in ADO.NET development.

Expert/Team Lead

  • Advanced Database Concepts: Expertise in advanced database concepts such as stored procedures, triggers, and views for complex data manipulation.
  • Enterprise Integration: Experience in integrating ADO.NET with enterprise systems and third-party APIs.
  • Code Refactoring: Ability to refactor and optimize existing ADO.NET codebase for better maintainability and performance.
  • Big Data: Understanding of big data concepts and technologies for handling large-scale data processing and analysis.
  • Cloud Integration: Familiarity with cloud platforms and services for deploying ADO.NET applications in the cloud.
  • Team Management: Proficiency in managing development teams and coordinating ADO.NET projects.
  • Technical Documentation: Skill in creating detailed technical documentation for ADO.NET applications and solutions.
  • Continuous Integration/Deployment: Knowledge of CI/CD pipelines and tools for automated build, test, and deployment of ADO.NET applications.
  • Agile Methodologies: Experience working in Agile development environments using methodologies such as Scrum or Kanban.
  • Problem Solving: Strong problem-solving skills to address complex issues and provide innovative solutions in ADO.NET development.
  • Industry Knowledge: Deep understanding of industry best practices and trends in ADO.NET development.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsAssist in coding and debugging software$50,000 – $70,000
Middle2-5 yearsDevelop software modules and handle more complex tasks$70,000 – $90,000
Senior5-10 yearsLead development projects, mentor junior developers, and design software architecture$90,000 – $120,000
Expert/Team Lead10+ yearsManage teams, make strategic decisions, and drive technical innovation$120,000 – $150,000+

How and where is ADO.NET used?

Case NameCase Description
1. Database ConnectivityADO.NET Development provides a robust and efficient way to connect to various databases, including SQL Server, Oracle, MySQL, and more. It allows developers to establish a connection, execute queries, and retrieve data from databases seamlessly.
2. Data Access LayerADO.NET Development enables the creation of a data access layer that allows developers to interact with databases without exposing complex SQL queries directly in the application code. This helps in improving code manageability, scalability, and simplifies maintenance.
3. Data BindingADO.NET Development provides powerful data binding capabilities, allowing developers to bind data from databases to various user interface controls such as grids, lists, and forms. This simplifies the process of displaying and manipulating data in applications.
4. Data CachingADO.NET Development includes features like caching, which allows developers to cache frequently accessed data in memory. This helps in improving application performance by reducing the number of database calls and enhancing response times.
5. Data ManipulationADO.NET Development provides a wide range of functionalities for data manipulation, such as inserting, updating, and deleting records in databases. This enables developers to perform complex data operations efficiently and securely.
6. Batch ProcessingADO.NET Development supports batch processing, which allows developers to perform multiple database operations in a single transaction. This ensures data integrity and improves performance by reducing the number of round trips to the database.
7. Asynchronous ProgrammingADO.NET Development supports asynchronous programming, enabling developers to perform database operations without blocking the main thread. This improves application responsiveness and allows concurrent execution of multiple database requests.
8. Stored Procedure ExecutionADO.NET Development provides the ability to execute stored procedures, which are precompiled database routines. This allows developers to leverage the power of stored procedures for complex data manipulations, business logic execution, and performance optimization.
9. Data ReportingADO.NET Development can be used to retrieve data from databases and generate reports. Developers can utilize reporting tools and libraries to create dynamic and interactive reports based on the data fetched using ADO.NET.
10. Integration with Other TechnologiesADO.NET Development can be seamlessly integrated with other technologies and frameworks, such as ASP.NET, Windows Forms, WPF, and more. This provides developers with a wide range of options to build robust and scalable applications across different platforms.

Pros & cons of ADO.NET

6 Pros of ADO.NET

  • 1. High Performance: ADO.NET is designed to provide high performance data access to databases. It utilizes a lightweight and efficient data access model, allowing for faster data retrieval and manipulation.
  • 2. Scalability: ADO.NET is built to handle large-scale applications and can efficiently manage large volumes of data. It supports connection pooling, which helps improve performance and scalability by reusing existing connections.
  • 3. Data Source Independence: ADO.NET provides a data provider model that allows developers to work with various data sources such as SQL Server, Oracle, MySQL, and more. This flexibility enables developers to build applications that can easily switch between different databases without significant code changes.
  • 4. Disconnected Data Access: ADO.NET supports disconnected data access, which means that data can be retrieved from the database and then disconnected from the data source. This enables offline data manipulation, reduces network traffic, and improves application responsiveness.
  • 5. Security: ADO.NET includes robust security features to protect sensitive data. It supports various authentication methods, encryption, and parameterized queries to prevent SQL injection attacks.
  • 6. Rich Tooling and Integration: ADO.NET integrates well with other Microsoft technologies, such as Visual Studio, making it easier for developers to build and maintain applications. It provides a rich set of tools and libraries, including the Entity Framework, LINQ, and DataSets, which simplify data access and manipulation tasks.

6 Cons of ADO.NET

  • 1. Steep Learning Curve: ADO.NET has a steep learning curve, especially for developers who are new to database programming. It requires understanding various concepts, such as data providers, connection management, and data access techniques.
  • 2. Complex Data Access Code: Writing data access code in ADO.NET can be verbose and complex compared to higher-level ORMs (Object-Relational Mapping) frameworks. Developers need to manually handle connections, transactions, and data mapping, which can lead to more code maintenance and potential errors.
  • 3. Limited Cross-Platform Support: ADO.NET is primarily designed for Microsoft technologies and has limited support for cross-platform development. While it is possible to use ADO.NET with non-Microsoft databases, the level of integration and tooling may not be as robust.
  • 4. Lack of Built-in Object-Relational Mapping (ORM): ADO.NET does not provide a built-in ORM framework, which means developers need to handle object-relational mapping manually. This can result in additional development effort and increased complexity, especially for applications with complex data models.
  • 5. Less Suitable for Small-Scale Applications: ADO.NET’s design and features make it more suitable for large-scale enterprise applications. For small-scale applications with simple data access requirements, using a lightweight ORM or a simpler data access technology may be more appropriate.
  • 6. Limited Support for Asynchronous Programming: ADO.NET was initially designed for synchronous programming models, and although it has added some support for asynchronous programming in recent versions, it still has limitations compared to newer asynchronous data access frameworks.

Soft skills of a ADO.NET Developer

Soft skills are essential for ADO.NET Developers as they contribute to their overall effectiveness and success in their roles. These skills are particularly important when working in a team or interacting with clients. Here are the soft skills required for ADO.NET Developers at different levels:

Junior

  • Communication: Clear and effective communication skills to understand requirements and convey ideas to team members and stakeholders.
  • Collaboration: Ability to work well in a team environment, actively participate in discussions, and contribute to the success of the project.
  • Adaptability: Willingness to learn and adapt to new technologies, frameworks, and methodologies as per project requirements.
  • Problem-solving: Aptitude for identifying and resolving technical issues and finding innovative solutions to improve application performance.
  • Attention to detail: Strong attention to detail to ensure accuracy and quality of code and deliverables.

Middle

  • Leadership: Ability to take on leadership roles within a team, mentor junior developers, and guide them in their professional growth.
  • Time management: Efficiently manage multiple tasks and prioritize work to meet project deadlines.
  • Analytical thinking: Strong analytical skills to analyze complex problems and provide optimal solutions.
  • Client interaction: Excellent interpersonal skills to effectively communicate with clients, understand their requirements, and address their concerns.
  • Teamwork: Collaborate effectively with cross-functional teams, including developers, testers, and project managers, to deliver high-quality solutions.
  • Self-motivation: Ability to work independently, take ownership of tasks, and drive them to completion.
  • Documentation: Proficiency in documenting project requirements, design decisions, and technical specifications.

Senior

  • Mentoring: Mentor and guide junior and middle-level developers, sharing knowledge and best practices to enhance the team’s overall skill set.
  • Strategic thinking: Ability to think strategically, align development efforts with business goals, and make decisions that drive project success.
  • Conflict resolution: Skill in resolving conflicts within the team, addressing differences of opinion, and fostering a positive work environment.
  • Project management: Proficiency in managing development projects, including scope definition, resource allocation, and risk management.
  • Client management: Experience in managing client relationships, understanding their business needs, and ensuring customer satisfaction.
  • Innovation: Ability to identify opportunities for innovation and improvement within the development process and drive implementation.
  • Presentation skills: Excellent presentation skills to effectively communicate project progress, technical concepts, and recommendations to stakeholders.
  • Decision-making: Strong decision-making skills to make informed choices regarding technical approaches, architecture, and project direction.

Expert/Team Lead

  • Strategic leadership: Lead development teams, set technical direction, and align it with the organization’s long-term goals.
  • Team management: Effectively manage and motivate teams, delegate tasks, and ensure efficient utilization of resources.
  • Business acumen: Understand the business context and translate it into technical solutions that drive value for the organization.
  • Continuous learning: Foster a culture of continuous learning and professional growth within the team.
  • Negotiation: Strong negotiation skills to manage stakeholder expectations, resolve conflicts, and achieve consensus.
  • Quality assurance: Ensure the delivery of high-quality software solutions through rigorous testing and quality assurance practices.
  • Risk management: Identify and mitigate project risks, proactively addressing potential issues that may impact project success.
  • Strategic partnerships: Build strategic partnerships with clients, vendors, and other stakeholders to drive collaboration and business growth.
  • Technical expertise: Deep understanding and expertise in ADO.NET, along with a broader knowledge of related technologies and industry best practices.
  • Influence and persuasion: Effectively influence and persuade stakeholders to adopt new technologies, methodologies, or process improvements.
  • Business development: Contribute to business development efforts by identifying new opportunities, preparing proposals, and participating in client meetings.

TOP 13 Facts about ADO.NET

  • ADO.NET is a data access technology used in .NET Framework to interact with databases.
  • It provides a set of classes and libraries for connecting to, retrieving, updating, and manipulating data from various data sources, including SQL databases, XML documents, and more.
  • ADO.NET uses a disconnected data model, which means that data is retrieved from the database, disconnected from the database connection, and manipulated locally before being sent back to the database.
  • ADO.NET supports multiple data providers, including Microsoft SQL Server, Oracle, MySQL, and more, allowing developers to work with different databases using a consistent programming model.
  • It offers various data access components, such as the Connection object for establishing a connection to the database, the Command object for executing SQL statements or stored procedures, the DataReader object for retrieving data in a forward-only, read-only manner, and the DataSet object for working with data in a disconnected manner.
  • ADO.NET provides a high level of performance and scalability, making it suitable for building enterprise-level applications that require efficient data access and manipulation.
  • It supports both connected and disconnected data access models, allowing developers to choose the most appropriate approach based on the requirements of their application.
  • ADO.NET includes support for transaction management, enabling developers to perform atomic database operations and maintain data integrity.
  • It offers advanced data caching capabilities through the DataSet object, allowing developers to store and retrieve data locally without making round trips to the database.
  • ADO.NET provides support for data binding, which makes it easy to display and manipulate data in user interface controls, such as grids, forms, and reports.
  • It supports various data formats, including XML, JSON, and binary, allowing developers to work with data in different representations.
  • ADO.NET integrates tightly with other .NET technologies, such as ASP.NET for web application development, Windows Forms for desktop application development, and WCF for building distributed applications.
  • It is a mature and widely adopted technology, with a large community of developers and extensive documentation and resources available for learning and mastering ADO.NET.

What are top ADO.NET instruments and tools?

  • Entity Framework: Entity Framework is an object-relational mapping (ORM) framework for ADO.NET. It was first released in 2008 and is widely used for data access in .NET applications. It provides a high-level abstraction for interacting with databases, allowing developers to work with database entities as objects, rather than writing raw SQL queries. Entity Framework supports various database providers and offers features like automatic change tracking, query optimization, and code-first development.
  • ADO.NET DataReader: ADO.NET DataReader is a lightweight and efficient data access component in ADO.NET. It provides a forward-only, read-only stream of data from a database. The DataReader is optimized for retrieving large result sets quickly and is commonly used when read-only access to data is needed. It performs well in scenarios where the entire result set is not needed to be loaded into memory at once.
  • ADO.NET DataSet: ADO.NET DataSet is an in-memory cache of data retrieved from a database. It is a disconnected data structure that can hold multiple tables, relationships, and constraints. The DataSet allows for offline data manipulation and supports features like data binding, serialization, and XML integration. It is commonly used in scenarios where data needs to be manipulated locally before being persisted back to the database.
  • ADO.NET CommandBuilder: ADO.NET CommandBuilder is a component that automatically generates SQL commands (INSERT, UPDATE, DELETE) based on changes made to a DataSet. It simplifies the process of updating data in a database by eliminating the need to write manual SQL statements. The CommandBuilder analyzes the changes made to the DataSet and generates the appropriate SQL statements to apply those changes to the database.
  • ADO.NET Connection: ADO.NET Connection is a fundamental component for establishing a connection with a database. It provides access to the underlying database and allows for executing SQL commands. ADO.NET supports various connection types, such as SqlConnection for SQL Server, OracleConnection for Oracle databases, and OdbcConnection for ODBC-compliant databases. The Connection object provides methods for opening, closing, and managing the connection to the database.
  • ADO.NET Transaction: ADO.NET Transaction provides a mechanism for grouping multiple database operations into a single logical unit of work. It ensures that either all the operations within the transaction are successfully committed or none of them are committed, maintaining data integrity. ADO.NET supports both local transactions (within a single database connection) and distributed transactions (across multiple database connections).
  • ADO.NET Command: ADO.NET Command represents a SQL statement or stored procedure that is executed against a database. It is used to perform operations like inserting, updating, deleting, and querying data. The Command object allows for parameterized queries, preventing SQL injection attacks, and provides methods for executing the command and retrieving the results.
  • ADO.NET DataAdapter: ADO.NET DataAdapter serves as a bridge between a DataSet and a data source. It populates a DataSet with data from a database and also updates the database with changes made to the DataSet. The DataAdapter uses Command objects to execute SQL commands and fill the DataSet. It provides methods for retrieving data, updating data, and managing concurrency control.

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