Data Layer Best Practices

Question

I am in the middle of a \"discussion\" with a colleague about the best way to implement the data layer in a new application.

One viewpoint is that the data layer should

Answer 1

An excellent book I have, which covers this topic, is Data Access Patterns, by Clifton Nock. It has got many good explanations and good ideas on how to decouple your business layer from the persistence layer. You really should give it a try. It's one of my favorite books.