dbcontext to objectcontext

1. What is the difference between ObjectContext and DbContext?
2. Does DbContext inherit ObjectContext?
3. What is DbContext C#?
4. Should DbContext be Singleton?
5. What is DbContext and DbSet in Entity Framework?
6. What is difference between Entity Framework and LINQ?
7. How can I get DbContext from entity?
8. What is the difference between Poco code first and simple EF approach?
9. What is context C#?
10. What is scaffold DbContext?
11. Is DbContext thread safe?
12. What is DbContext in .NET core?

What is the difference between ObjectContext and DbContext?

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.

Does DbContext inherit 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. The API is exposed by ObjectContext.

What is DbContext C#?

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. ... Querying: Converts LINQ-to-Entities queries to SQL query and sends them to the database.

Should DbContext be Singleton?

DbContext should not be used as a singleton because it is holding a connection object which cannot be used by multiple threads at the same time. You will run into errors if two requests try to use it at the same time. If your service depends on the context, the service cannot be a singleton.

What is DbContext and DbSet in Entity Framework?

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 difference between Entity Framework and LINQ?

LINQ to SQL allow you to query and modify SQL Server database by using LINQ syntax. Entity framework is a great ORM shipped by Microsoft which allow you to query and modify RDBMS like SQL Server, Oracle, DB2 and MySQL etc. It cannot generate database from model. ...

How can I get DbContext from entity?

Defining a DbContext derived class

Once you have a context, you would query for, add (using Add or Attach methods ) or remove (using Remove ) entities in the context through these properties. Accessing a DbSet property on a context object represent a starting query that returns all entities of the specified type.

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. ... Generally, POCO is some simple object, exactly "Plain Old CLR Object" and Code First is the approach that is working with the POCOs.

What is context C#?

A context is an ordered sequence of properties that define an environment for the objects resident inside it. ... Whenever a new object is instantiated, the . NET Framework finds a compatible or creates a new instance of the Context class for the object. Once an object is placed in a context, it stays in it for life.

What is scaffold DbContext?

Reverse engineering is the process of scaffolding entity type classes and a DbContext class based on a database schema. It can be performed using the Scaffold-DbContext command of the EF Core Package Manager Console (PMC) tools or the dotnet ef dbcontext scaffold command of the . NET Command-line Interface (CLI) tools.

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.

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.