VS 2008: The MIA Features: Figure 1: Map Relational Tables.
The Entity Framework offers a command-line mapping tool (Edmgen.exe) that creates the three XML files required to map the persistence (physical or relational) layer to the conceptual layer that defines the Entity Data Model (EDM) for a project. However, most developers probably will prefer the graphical EDM Designer that creates a single EDMX file that turns into the SSDL, MSL, and CSDL files during prebuild. The Entity Mapping Details pane lets you customize table
column to entity property mapping; notice that the CustomerID foreign key field isn't mapped to an Object entity property value--instead it's a navigation property. The Entity Model Brower pane provides a tree view of the EDM container, including its EntitySets and Entities. (This is the CTP 1 pre-beta version.)