MVVM where to put Data Access Layer?

Question

I am investigating WPF\'s MVVM design pattern. But am unsure where to put the Data Acess code?

In some examples I have looked at, data access is performed directly i

Answer 1

The WPF Application Framework (WAF) contains a sample application that shows how the Model-View-ViewModel (MVVM) pattern might be used in combination with the Entity Framework.