database systems

[JP Massar]

Could someone mail me a list of reasonable database systems along
with companies' names and addresses or phone numbers that run        
under Unix?  If anyone knows of a system that runs both under Unix
and VMS that would be helpful also.

By reasonable I mean pretty complete, with naive-user interface,
C and/or other language interfaces, forms data entry package, security...

Recommendations are also welcome.  I will summarize.
Thanks.
-- 
-- JP Massar, Thinking Machines Corporation, Cambridge, MA
-- mit-eddie!godot!massar, ihnp4!godot!massar, massar at think, massar at cca-unix