If you just need to change the name of the table you can:
- Open EDMX file with XML Editor.
- Locate SSDL section in it.
- Locate entity set element for example
<EntitySet Name="Customers" EntityType="ExampleModel.Store.Customers" Schema="dbo" />
. - Add
Table="MyTableName"
attribute.<EntitySet Name="Customers" EntityType="ExampleModel.Store.Customers" Schema="dbo" Table="MyTableName" />
Here is a complete CSDL, SSDL, MSL specification.
Hope that helps.