Sure, but PostgreSQL and MySQL should give you a starting base,
considering that they have more time in market regarding GIS and
probably they based their implementations in users requests too. I
think, regarding GIS and DBs, that the users requests are convergent,
independent of the SGDB used.

Carlos
http://www.warmboot.com.br
FireBase - http://www.FireBase.com.br

AWH> Carlos,
AWH> I know that other databases have GIS components - what I hope
AWH> to learn is what our users want.
AWH> Thanks,
AWH> Ann