Question

I’m trying to map a POCO class to a table of my DB using annotation.
I need to use Table annotation to specify the name of my table, but I cannot resolve the Table annotation.

Note: I imported System.Data.Entity namespace but It doesn’t work.

Which namespace do I have to import to use EF annotations?

NOTE 1
I mean:

[Table("my_table")]
public class MyClass
{
    // ...
}

NOTE 2 My Entity Framework dll is v4.0.30319

Answer 1

I need to use the Table annotation

You need to import the System.Data.Linq library, the TableAttribute can be referenced from the System.Data.Linq.Mapping namespace.