Looking for a DB Schema Drawing tool on Mac OS X

Question

I am looking for an easy-to-use db schema drawing tool for Mac. No reverse-engineering nor db schema generation needed, just a simple drawing tool with pre-designed db-related graphical components (boxes, relations-arrows, PK/FK symbols ...) Do you know any (non-commercial) good tool ?

Answer 1

Argo UML http://argouml.tigris.org/ is pretty good and although it's really aimed at producing UML diagrams it can also make reasonable looking schema pictures.

If you'd consider a commercial product, I use OmniGraffle Omni Group which is excellent.