http://hobbes.nmsu.edu/cgi-bin/h-search?key=postgre
PostGres is a SQL database; there is another port (8/4/2005) of version 7.4.8 (http://www.andymac.org/libraries.html)with some Python interface modules available (http://www.andymac.org/python-2.4/).
Source: OS/2 Warp News and Rumors