In a previous blog post, Scott Guthrie demonstrated how to use the default Entity Framework 4 mapping conventions to enable database persistence. In this post, he discusses how you can override the default persistence mapping rules, and use whatever custom database schema you want.
The CTP4 release of the “EF Code-First” functionality provides a pretty nice code-centric way to work with data. It brings with it a lot of productivity, as well as a lot of power. Hopefully these two blog posts provides a glimpse of some of the possibilities it provides.