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dotnet efcore: EF Core is a modern object-database mapper for NET. It supports LINQ queries, change tracking, updates, and schema migrations.

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.

At this step, your appsettings.json must have your ConnectionString already. If you’re working on an existing project that already using EF6 or one that is linked to the .NET Framework, it’s still a good option to use EF 6. However, if you are developing new projects, particularly projects targeting .NET Core or .NET 5/6+, EF Core is the best choice. EF Core’s flexibility, performance improvements, and cross-platform capabilities make it the perfect selection for modern application development. The EF 6.x is a stable and fully tested ORM technology in many .NET Framework applications. The application targets .NET Core, e.g., ASP.NET Core Applications.

What is Entity Framework in .NET Framework?

In the Code-First Approach, the EF Core creates the database and tables using Code-First Migration based on the default conventions and configuration. You can also change the default conventions used to create the database and its related tables. This approach is useful in Domain-Driven Design (DDD), i.e., creating the database tables based on the Domain classes. Then, based on the application domain classes and DBContext class, the EF Core creates the database and related tables. For a better understanding, please have a look at the following diagram.

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.

EFCore.sln.DotSettings

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

entity framework

This Entity Framework Course is designed for Students, Beginners, Intermediates, and Professionals Developers who want to learn Entity Frameworks step by step, from the basics to the advanced concepts. This tutorial provides a hands-on approach to the subject with step-by-step program examples that will assist you in learning and putting the acquired knowledge into practice. An ORM Framework like Entity Framework or EF Core can do all of the above for us and saves a lot of time if we provide the required information to the ORM Framework. The ORM Framework sits between our application code and the Database. It eliminates the need for most custom data-access codes we usually write without an ORM. EF API infers INSERT, UPDATE, and DELETE commands based on the state of entities when the SaveChanges() method is called.

Schema definition language

Entity Framework Core is the new and improved version of the Entity Framework for .NET Core applications. EF Core continues to support the same features and concepts as EF 6. The EF Core database provider usually contains the functionality specific to the database it supports. Entity Framework (EF) Core is an ORM (Object-Relational Mapper) Framework for data access in .NET Core.

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.

NuGet.config

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.

  • That means the Entity Framework eliminates the need to write the data-access code that developers usually need to write.
  • This means you need to start coding first in C# or VB.NET and then EF will create the database from your code.
  • In the code-first approach, EF Core API creates the database and tables using migration based on the conventions and configuration provided in your domain classes.
  • Before .NET Framework 3.5, as a developer, we often wrote ADO.NET Code to perform CRUD operations with the underlying database.

For a full tutorial configuring the DbContext, defining the model, and creating the database, see getting started in the docs. Install the provider package corresponding to your target database. In this step-by-step guide, we’ll walk you through the process of installing and implementing entity framework meaning in a .NET Core application. We’ll also use SQL Server as the database and show you how to install the required NuGet package, EntityFrameworkCore.SqlServer. Entity Framework (EF) is a powerful and widely used Object-Relational Mapping (ORM) tool for .NET Core developers. It simplifies database interactions by allowing you to work with database objects as if they were regular C# objects.

EF Core Version History

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

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 Core

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

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