I am trying to connect to a localDb instance of the SQL Server. You can connect to a SQL Server Instance as well, by modifying the connection strings. You can refer here for connection string variants of SQL Server.
It is the most crucial class when it comes to working with EF 6 or EF Core. It helps execute the create, read, update, and delete commands in a database schema. It is also used to configure domain classes, map databases, track changes, and store cache. As a developer, we mostly work with the application business objects, and the ORM Framework generates the necessary SQL (to perform the CRUD operation) that the underlying database can understand.
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In our case, we have added the student entity and hence this description. Let’s add the connection string pointing to the database we need to connect to. It can either be an existing database or a completely new one. Open up appsettings.json and add this piece of line to the top. However complex or simple your application, it is hard to not notice the vital part that a Database plays in it.
This is how you build decoupled applications the right way. Here, you can observe we have created the connection object, created the data adapter object, and created Dataset, Data Tables, and DataView what is entity framework objects. And here we are also writing the SQL Commands to fetch the data from the database tables and fill the dataset. We can avoid all these ADO.NET Related things if we use Entity Framework.
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As a result, an in-memory database may not be suitable for applications that deal with vast amounts of data. But again, these downsides don’t really apply to using an in-memory database for testing. EF Core also supports LINQ (Language Integrated Query), which makes it easier to write queries against the data in your database. This is because LINQ allows you to write queries directly in C# instead of SQL or some other query language. Entity Framework Core is an ORM Framework for the .NET World. It allows developers to work with databases without even touching them.
This means that by using an instance of this DbContext class, we will be able to perform operations over the Product Entity. 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 necessary 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.
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