Data Access example using Entity Framework

Question

Does anyone know of or having any good examples of how to use Entity Framework version 2 in the Data Access layer and put an interface on it so the business layer uses the interface rather than knowing about EF? I have found some examples but they are all from 2009 and I'm not sure how they relate to Entity Framework version 2.

Answer 1

This article specifically references Entity Framework 4, which is the latest release of EF.

Answer 2

I found the following link more helpful with separating the DAL and being able to apply TDD.

http://blogs.msdn.com/b/adonet/archive/2009/12/17/walkthrough-test-driven-development-with-the-entity-framework-4-0.aspx