WCF RIA Services - Part IV, Presentation Models

Presentation model aggregates data from multiple entities in the data access layer. It is useful when you do not want to directly expose the entities in your data access layer to the client.

You should read these links:

• http://msdn.microsoft.com/en-us/library/ee707347(VS.91).aspx
• http://blogs.msdn.com/deepm/archive/2009/11/20/wcf-ria-services-presentation-model-explained.aspx

I’ve implemented sample described here.