Open source data modeling tools for PostgreSQL

Hi,

I am looking for an open source (free) data modeling tool for PostgreSQL.

It should - if possible - support:
- E-R-Modelling
- relational data model / modeling
- (GUI SQL interface to the database)
- platform independence (Win32, Mac, Unix/Linux)

Does anybody know some tools that match my criteria?

Thanks, Markus



--
Markus Seibold
------------------------------
Krebsgasse 6
D-93047 Regensburg
Germany
------------------------------
Email: markus.seibold@gmx.net
Phone: +49 (941) 504 1009
Mobile: +49 (171) 212 6869
FAX: +49 (89) 1488 210457



--
Markus Seibold
------------------------------
Krebsgasse 6
D-93047 Regensburg
Germany
------------------------------
Email: markus.seibold@gmx.net
Phone: +49 (941) 504 1009
Mobile: +49 (171) 212 6869
FAX: +49 (89) 1488 210457