What is the difference between ObjectContext and DbContext?

What is the difference between ObjectContext and DbContext?

DbContext is nothing but a ObjectContext wrapper, we can say it is a lightweight alternative to the ObjectContext….ObjectContext VS DBContext.

What is the difference between ObjectContext and DbContext in relation to EF?

The main difference between DBContext and ObjectContext is that DBContext is a wrapper of ObjectContext and denotes most commonly used features of ObejctContext, while ObejctContext is a part of core Entity Framework API that allows in performing operations on the database using strongly typed entity classes.

What is the difference between DbContext and DbSet?

2 Answers. 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. So it makes perfect sense that you will get a combination of both!

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 lazy loading in Entity Framework?

Lazy loading is the process whereby an entity or collection of entities is automatically loaded from the database the first time that a property referring to the entity/entities is accessed. Lazy loading means delaying the loading of related data, until you specifically request for it.

What is the difference between Poco code first and simple EF approach?

2 Answers. If you use EF code first you have POCO objects and the database is created with code from the DbContext class. You get no visual designer when using code first. You can also use POCOs for “ordinary” EF but then your database will be handled by an edmx file and a visual designer.

What is DB set in EF?

A DbSet represents the collection of all entities in the context, or that can be queried from the database, of a given type. DbSet objects are created from a DbContext using the DbContext.

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 a singleton?

First, DbContext is a lightweight object; it is designed to be used once per business transaction. Making your DbContext a Singleton and reusing it throughout the application can cause other problems, like concurrency and memory leak issues.

Why is DbContext not thread safe?

This is usually caused by different threads using the same instance of DbContext, however instance members are not guaranteed to be thread safe. When concurrent access goes undetected, it can result in undefined behavior, application crashes and data corruption.

What’s the difference between object context and dbcontext?

DBContext is a wrapper of ObjectContext that exposes the most commonly used features of ObjectContext. In contrast, Object Context is a class of the core Entity framework API that allows performing queries and tracking the updates made to a database using strongly typed entity classes.

Which is thread safe ObjectContext or dbcontext?

Any public static (C#) or Shared (Visual Basic) members of DbContext are thread-safe. Any instance members are not guaranteed to be thread safe. There are also many methods in common in both ObjectContext and DbContext.

What can ObjectContext be used to encapsulate?

ObjectContext also encapsulates a few of things; they are: 1 Connection to the Data Store or Database 2 Metadata in the Entity Data Model (EDM) 3 ObjectStateManager to track changes to the objects