Entity Framework is an open-source ORM (Object Relational Mapping) Framework for the .NET applications supported by Microsoft. It enables the developers to work with the data using the objects of domain-specific classes without focussing on the database tables and columns where the data is stored. With the Entity Framework, developers can work at a higher level of abstraction when developers deal with the data. With the help of Entity Framework, we can create and maintain data-oriented applications with less code when compared with traditional applications.
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.
EF Basics
Entity Framework is an open-source object-relational mapper framework for .NET applications supported by Microsoft. 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.
This class must be included as a DbSet type property in the DbContext class. EF API maps each entity to a table and each property of an entity to a column in the database. Work still needs to be done to retrieve and map the data from the database to an instance of the domain object. However, as the domain model grows, the amount of code required can grow and will need more and more development time to maintain. This will increase the overall amount of time required to complete an application. This site provides documentation and tutorials for people looking for help with using EF Core, Microsoft’s recommended data access technology for applications based on the .NET Core framework.
Seeding initial data
In the database, EF API will create a ForeignKey Grade_GradeId in the Students table, as shown below. The above classes become entities when they are included as DbSet properties in a context class (the class which derives from DbContext), as shown below. 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. Entity Framework is an Object/Relational Mapping (O/RM) framework. It is an enhancement to ADO.NET that gives developers an automated mechanism for accessing & storing the data in the database.
Each record’s type is distinguished by a Discriminator column, which usually holds a simplified C# type name. The Discriminator column is invisible to developers from C#, but we can see it in the database schema generated by EF Core 5. Additionally, we will want to install the dotnet-ef what is entity framework command-line tool (CLI). From within the newly created project directory type the following commands into Rider’s integrated terminal. There are other ORMs in the marketplace such as NHibernate and LLBLGen Pro. Most ORMs typically map domain types directly to the database schema.