> If DDL statements on an active database may result in corruption, then
> the Firebird engine should reject such requests or fix bugs in that area.

Sure. Please, provide a test case and bug will be fixed.

Regards,
Vlad

PS I rememer that old IB docs mentions restrictions on DDL on database
in use but i can't find it right now. In any case, there should be no chance
for the corruptions, of course.