I envision a freely-available executable with two or so panels:

1) List of available RDBMS systems with a check box next to each.

2) Possible attributes: Cost/seat, Database Manager cost, restart time,
SQL-92 adherence, self-tuning, 'invisibility', short-term trx vs
long-term trx or both, plus other RDBMS traits.

Changing any of 2) will change the panel 1 list - to wit - non-viable
alternatives get the gong sound and red or disabled control.

We chose Firebird/Interbase as an upgrade to BDE mainly because of
capability, rather than cost. So - if there is a need for a
promotional tool & you can help me with lists & attributes, then I'll
get started
with something useful to all... <&I don't have a gong sound, either>

cheers - dave