Which is the top layer in the ADO.NET Entity Framework?

Answer:

Object Services Explanation: Object Services is the top layer in the ADO.NET Entity Framework. This framework is made up of three layers: EDM (Entity Data Model), Mapping and Source. Object Services falls under the EDM layer. Figure 4 in the article referenced below gives the overall ADO.NET Entity Framework Architecture. Ref: Achieve Flexible Data Modeling With The Entity Framework - http://msdn.microsoft.com/en-us/magazine/cc700331.aspx Courtesty: Internet