In separate data access & business logic layer, can I use Entity framework classes in business layer?

Question

In separate data access & business logic layer, can I use Entity framework classes in business layer?

EDIT: I don\'t think I will need to swap out the data acces

Answer 1

As with all questions of this nature the answer is it depends. If you want a clear seperation of your data access logic and business layer I would say no. If that is what you are aiming for I would use a repository pattern and IoC to build the data access layer then you can swap in a stub DAL for unit testing purposes and then bring in the database access when you get to the functional testing.