34 votesKristofer Andersson commented
This is done automatically if you update the model with my [3rd party] add-in. The model documentation fields are automatically populated from the extended properties / description field in SQL server. See http://huagati.blogspot.com/2010/07/introducing-model-comparer-for-entity.html and http://huagati.com/edmxtools/
7 votesKristofer Andersson commented
I have an add-in that allow you to select inheritance strategy (TPT, TPH, or TPC) for model-first hierarchies in EF4. This is described in more detail at http://huagati.blogspot.com/2010/10/mixing-inheritance-strategies-in-entity.html
Good news: this is another thing that we felt was really important to take to the OData v4 protocol committee. This feature will be available in the near future as we finish work on our v4 stack.