Quite a few people have asked for the database schema for CRM 1.x. Well, we were a little hesitant about handing it out for a few reasons. One, we really don't think you should be partying on the database directly. Two, there was no reasonable delivery mechanism for doing so. Well, this morning our UE team posted the logical model on MSDN. This is a big Visio diagram that shows all the entities, the definitions (no attributes), and all the relationships, both logical and physical. Thanks to the CRM UE team for putting this together.
A little trivia - this model was generated from the metadata using VBA and then hand-tweaked to fix some of the layout issues. Just thought that was an interesting take-away.