The first approach is to use the DbSet on our EntertainmentDbContext class. The discriminator is an important mechanism that we’ll see used later in this post’s query section. We can use the NuGet tool window to find and install all these packages into our project. Various profilers are commercially what is entity framework available to troubleshoot performance issues using Entity Framework, both for EF and EF Core variants. 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.
In the next section, we’ll see that it’s possible to do aggregates on a single table without traversing the production relationship. We’ll keep the subject simple, but we’ll also explore some important EF Core concepts. Our subject matter is Entertainment, both movies and television, which we’ll call Productions. I hope as folks read these sentences, they start to formulate the relationships in their mind. In Entity Framework, the Include method loads the related objects to include in the query results.
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Here, the Student entity is specified as generic type, so EF API will create a column Grade_GradeId in the Students table in the database. In the above context class, Students, and Grades properties of type DbSet are called entity sets. EF API will create the Students and Grades tables in the database, as shown below.
The C# Entity Framework is a set of ADO.NET technologies that aid in developing data-driven software. C# Entity framework is an Object Relational Mapping (ORM) framework that gives developers an automated way to store and access databases. The Entity Framework allows developers to work with data at a higher level of abstraction.
Use DbContext pooling
It can be used to retrieve some information from the database and also want to include related entities. Either way, Entity Framework works out how to move from your conceptual model to your database. So, you can query against your conceptual model objects and work directly with them. I’m currently working on an ASP.NET web application that uses Entity Framework for database access. You can significantly reduce the number of round trips to the database by avoiding the N+1 selects problem.