Quick Answer: What Is Difference Between DbContext And ObjectContext?

What is use of Entity Framework in MVC?

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..

Why do we use Entity Framework?

Entity Framework is an ORM and ORMs are aimed to increase the developer’s productivity by reducing the redundant task of persisting the data used in the applications. Entity Framework can generate the necessary database commands for reading or writing data in the database and execute them for you.

Does DbContext inherit ObjectContext?

DbContext is conceptually similar to ObjectContext. DbContext is nothing but a ObjectContext wrapper, we can say it is a lightweight alternative to the ObjectContext. DbContext can be used for DataBase first, code first and model first development. DbContext mainly contains a set of APIs that are very easy to use.

What is DbContext?

A DbContext instance represents a combination of the Unit Of Work and Repository patterns such that it can be used to query from a database and group together changes that will then be written back to the store as a unit. DbContext is conceptually similar to ObjectContext.

What is DbContext in MVC?

DbContext in Entity Framework 6. … DbContext is an important class in Entity Framework API. It is a bridge between your domain or entity classes and the database. DbContext is the primary class that is responsible for interacting with the database.

What is DbContext in .NET core?

A DbContext instance represents a session with the database and can be used to query and save instances of your entities. DbContext is a combination of the Unit Of Work and Repository patterns.

What is Entity Framework and how it works?

The Entity Framework is a set of technologies in ADO.NET that support the development of data-oriented software applications. … They must model the entities, relationships, and logic of the business problems they are solving, and they must also work with the data engines used to store and retrieve the data.

How do you consume scoped service from Singleton?

One way to do this is to:make your singleton service IDisposable ,inject IServiceProvider ,create and store an IServiceScope scope using the IServiceProvider. CreateScope() extension method,use that scope to create the the scoped service you need,dispose the service scope in the Dispose method.

What is the difference between DbContext and DbSet?

Intuitively, a DbContext corresponds to your database (or a collection of tables and views in your database) whereas a DbSet corresponds to a table or view in your database.

Should DbContext be Singleton?

Because it may be accessed by multiple threads concurrently, it should be thread-safe. … The DbContext is not thread safe so you should not use a singleton DbContext in an ASP.NET web app. A thread per request is created and you’ll start getting exceptions as soon as multiple users begin using your application.

Is DbContext thread safe?

DbContext is not thread-safe You must never access your DbContext -derived instance from multiple threads simultaneously. … In a multi-threaded application, you must create and use a separate instance of your DbContext -derived class in each thread.

Is DbContext scoped?

Yes, the default life time for DbContext is scoped.

What is DbContext entity framework?

The DbContext class is an integral part of Entity Framework. An instance of DbContext represents a session with the database which can be used to query and save instances of your entities to a database. DbContext is a combination of the Unit Of Work and Repository patterns. … Querying database. Saving data to the …

What is the basic job of a DbSet?

The DbSet is responsible for performing all the basic CRUD (Create, Read, Update and Delete) operations on each of the Entity. The DbSet operations are used to change any property of the entity in the EF Core. The most essential methods of the DbSet are: Querying Data.

What are the advantages of Entity Framework?

Advantages of Entity FrameworkIt provides auto generated code.It reduce development time.It reduce development cost.It enables developers to visually design models and mapping of database.It provides capability of programming a conceptual model.More items…•