Is there a good SQL Diagram Editor/Drawing Mac App Tool? Does anyone know a comprehensive Mac app to create SQL Diagramms?
I think http://ondras.zarovi.cz/sql/demo/ is quite good, but it's a little bit too basic.

I would like to create the database schema, the relations between the tables (including labels for e.g. n:m relations), add comments, export to SQL, and so on to run from my Mac.
MySQL Workbench is good enough for most programming demands. You can create EER Model and can also synchronize the model with DB Changes or vice versa. You can use it with no cost as it's a open-source application. I have been using MySQL for a year and it is very useful for me. I recommend it to you if you don't need any enterprise features and performance.