Entity Framework is an open-source object-relational mapper framework for .NET applications supported by Microsoft. It increases the developer’s productivity as it enables developers to work with data using objects of domain-specific classes without focusing on the underlying database tables and columns where this data is stored. It eliminates the need for most of the data-access code which is used to interact with the database that developers usually need to write. It provides an abstract level to the developers to work with a relational table and columns by using the domain-specific object.

entity framework

The following figure illustrates the supported application types, .NET Frameworks and OSs. An ORM (Object-Relational Mapper) is used to interact with a database using an object-oriented programming language. ORMs allow developers to work with databases using familiar, object-oriented concepts, rather than writing raw SQL statements. These commands will create the initial database migration and apply it to your SQL Server instance.

Entity Framework

It was released along with .NET Core and is an Extensible, Lightweight, Open Source, and Cross-Platform Version of Entity Framework data access technology. It works on multiple operating systems like Windows, Mac, and Linux. Entity Framework (EF) is an open source[2] object–relational mapping (ORM) framework for ADO.NET. It was originally shipped as an integral part of .NET Framework, however starting with Entity Framework version 6.0 it has been delivered separately from the .NET Framework.

entity framework

The version 4.3.1 was released on February 29, 2012.[10] There were a few updates, like support for migration. A third version of Entity Framework, version 4.1, was released on April 12, 2011, with Code First support. Some people prefer to write all queries (Dapper) and some people prefer to work with LINQ (EF Core). The latest version of EF Core is now the recommended ORM for any new project over EF6. In this Entity Framework Tutorials Course using C#, I will discuss all the concepts of Entity Framework with Real-Time Examples.

Entity Framework Tutorials For Begineers and Professionals

Alternately, the code can be built and packages can be created directly on your development machine. If you have a specific question about using these projects, we encourage you to ask it on Stack Overflow. If you encounter a bug or would like to request a feature, submit an issue.

Most people use EF Core by installing pre-build NuGet packages, as shown above. To take full advantage of this Entity Framework Core Tutorials, you should have the basic knowledge of C# and any database such as SQL Server, Oracle, or MySQL to gain more knowledge of these tutorials. Having .NET Core, Visual Studio, and SQL Server installed on your computer is good. Entity Framework Core is an ORM Tool that increases the developer’s productivity by reducing the redundant task of doing CRUD operations against a database in a .NET Core Application.

EFCore.sln

As you can see in the above figure, EF API will create the database based on your domain classes and configuration. This means you need to start coding first in C# or VB.NET and then EF will create the database from your code. Again, when we want to read the data from the database into our application, we also have to write some custom code to map the data to our model classes like Student, Department, Address, etc.

  • Work still needs to be done to retrieve and map the data from the database to an instance of the domain object.
  • Entity Framework introduced the Code-First approach with Entity Framework 4.1.
  • EF Core includes providers as NuGet packages which you need to install.
  • It provides a connection between the business entity and data tables in the database.

The ChangeTrack keeps track of the states of each entity as and when an action is performed. Entity Framework Core uses a provider model to access many different databases. EF Core includes providers as NuGet packages which you need to install.

EFCore.Tools.slnf

It also reduces the code size of the data specific applications and also the readability of the code increases by using it. This is a new technology for accessing the data for Microsoft application. Entity Framework is an open-source ORM framework for .NET applications supported by Microsoft. It enables developers to work with data using objects of domain specific classes without focusing on the underlying database tables and columns where this data is stored. With the Entity Framework, developers can work at a higher level of abstraction when they deal with data, and can create and maintain data-oriented applications with less code compared with traditional applications. That means the Entity Framework eliminates the need to write the data-access code that developers usually need to write.

entity framework

These builds contain latest features and bug fixes; previews and official releases lag significantly behind. Microsoft.Data.Sqlite entity framework meaning is a lightweight ADO.NET provider for SQLite. However, it can also be used independently or with other data access libraries.

We recommend using the daily builds to get the latest code and provide feedback on EF Core. Version 5.0.0 was released on August 11, 2012[11] and is targeted at .NET framework 4.5. Also, this version is available for .Net framework 4, but without any runtime advantages over version 4. The following figure illustrates the code-first development workflow. EF Core continues to support the following features and concepts, same as EF 6.

entity framework

This is a very common task as a developer for us that we do almost in every application. The EF Core supports relational and non-relational databases, which is possible due to the database providers. The Database Provider sits between the EF Core and the Database it supports. If you have an existing database and database tables are already there, you must use the EF Core Database First Approach. In the database-first approach, the EF Core creates the DBContext and Domain Classes based on the existing database schema using EF Core Command. As a developer, we mostly work with data-driven applications, and the ORM Framework generates the necessary SQL (to perform the CRUD operation) that the underlying database can understand.

Entity Framework simplifies database operations and allows you to work with your data using C# objects. You can now build upon this foundation to create more complex database-driven applications with ease. Let us understand why we need to use the ORM Framework with an example. Suppose we want to develop an application to manage the students of a college. To do this, we may need to create classes such as Student, Department, Address, etc.

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