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WCF 4.0 Multi-tier Services Development with LINQ to Entities by Mike Liu

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WCF architecture

The following diagram illustrates the principal layers of the Windows Communication Foundation (WCF) architecture. This diagram is taken from the Microsoft website (http://msdn.microsoft.com/en-us/library/ms733128.aspx):

WCF architecture
  • The Contracts layer defines various aspects of the message system. For example, the Data Contract describes every parameter that makes up every message that a service can create or consume.
  • The Service runtime layer contains the behaviors that occur only during the actual operation of the service, that is, the runtime behaviors of the service.
  • The Messaging layer is composed of channels. A channel is a component that ...

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