Answer / nithya_raghu

Service Contract --- Specifies the description of methods
which our service will provide to consuming application.
For WCF to identify contracts for the service,We need to
use a interface/class with [ServiceContract] attribute.
In WCF we can do interface/Class level programming.

Operation Contract --- We need to expose some methods to
consuming application to use our services.Those methods
will have [OperationContract] attribute. Making them public
will not make them accessible from outside.
So OperationContract Specifies the methods can be
accessible from outside.

Answer / senthil

This attribute is used to define the method inside
Interface.

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