database...mysql or postgresql

Afternoon Gentlemen, ....I am setting up a groupware "PHProjekt" server for several teams consisting of about 1500 people total. The groupware application "PHProjekt" requires a database and the documentation says mysql or postgresql will work. I have never worked with databases before so i was wondering which of the two is considered a better relational database? There is a possibility that a few apps will get served from the server as well so i guess speed and stability would be a factor.

The OS: OpenBSD 3.2 Generic
Hardware: AMD Athlon 2200+ w/256 ddr2100 ram Network: 100baseT
Groupware APP: PHProjekt
Web Server: Apache 1.3 + SSL/TLS
PHP4
Database: ?

Thanks in advance and have a fantastic day. Received on Fri Jan 31 13:35:56 2003