WCF Implementation

I am designing the ERP Web Application. I would like to know the best approach for the WCF implementation. I have 2 design. can anybody help me which is best开发者_C百科 or tell me any other best approach for the same.

First Approach

  Web Server(Server-1)

      UI Layer(Web Application) - (Layer-1)
      UI Handler(Class Library) - (Layer-2)

  Web Service(Server-2)

      WCF Service (WCF Service Application)
      Contract Client(Class Library)
      Contract (Class Library)
      Biz Operation Layer (Class Library)
      DB Layer (Class Library)
      Biz Entity (Class Library)

Data Flow

UI -> UI handler -> Web Service -> Contract Client -> Biz -> DB Here Each Call is Binded to one Method in Each Layer.

Second Approach

  Web Server(Server-1)

      UI Layer(Web Application) - (Layer-1)
      UI Handler(Class Library) - (Layer-2)

  Web Service(Server-2)

      WCF Service (WCF Service Application)
      Biz Layer (Class Library)
      DB Layer (Class Library)
      Biz Entity (Class Library)

UI -> UI handler -> Web Service -> Biz -> DB

Which is best or Is there anyother best approach available for WCF implementation.

Thanks in Advance.

Palanivelrajan

http://msdn.microsoft.com/en-us/magazine/ee335699.aspx