ADO.NET :: Entity Framework 4 - 3 Layer Versus 3 Tier

Aug 2, 2010

In this website article http://aspalliance.com/1943_ASPNET_40_and_the_Entity_Framework_4__Part_4__A_3_Layered_Approach_to_the_Entit_Framework

Vince Varallo says this in his opening paragraphs. "it will introduce a pattern for developing the application as a three layered application. Notice that I didn't say three tiered application. A tier really means a logical and physical separation of the layers. A layer implies just a logical separation. For many applications that's all you need. I'm not one to advocate over-engineering a system.

I always follow the simpler, better approach as long as the developers working with you understand the pattern."

Question 1. Can some explain to me what is difference between a 3 layer application and a 3 tiered application?

Question 2. Also, can some give me a link to a simple 3 tiered tutorial for entity framework?

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