The Model Browser
So far we’ve explored the primary designer surface that lets us manipulate the CDSL and the Mapping Details window that lets us manipulate the MSL. You can’t control the SSDL directly in the Entity Model Designer‑you have to do that in the Server Explorer or a tool like SQL Server Management Studio‑but you can view it using the last major component of the designer, the Model Browser. The Model Browser also shows you the structure of your conceptual model. Let’s see how it works.
You display the Model Browser the same way you display the Mapping Details Window: by right-clicking on a blank area of the primary designer surface. (But of course, this time you choose Model Browser from the menu.) It displays the CSDL and SSDL as a TreeView: