Jeffrey Ullman Courseware

From the home page of Jeffrey Ullman in Stanford you can get to his Lecture Notes, including powerpoints with audio, so it's like attending one of his classes.

Very interesting material if you want to refresh your skills on database modeling (or learn about it).

If you are using DeKlarit, the one on functional dependencies will help you to understand how the DeKlarit database normalization engine works. There is also a paper on the Universal Relations concept, that is also used in DeKlarit.