orion with mysql?

[Peter Peltonen]

Is it possible to use MySQL with Orion? Does it need a db-schema of it's own? 

We tried to use PostgreSQL but JBuilder4 didn't cope with it very well
(JBuilder isn't able to show Postgre's tables). We also tried Hypersonic, but
it seems that when both Orion and JBuilder communicate with the db the db gets
confused. At least the changes we make in JBuilder don't get updated.

Any ideas about a good open-source db that would work with both Orion and
JBuilder would be appreciated!

Regards,
Peter