Josef Kokeš schrieb am 21.09.2012 um 13:13 (+0200):

> It seems to me that I would have to create a role, give full access to
> this role (how?), give this role to both my users, and then in the
> future keep adding rights to this role.

Some bits here, if you need more there's stuff in the archives:

http://tech.groups.yahoo.com/group/firebird-support/message/52407

> It might actually be more feasible to say that one of those users will
> be a SYSDBA and do an IF (CURRENT_USER='SYSDBA') THEN ...

SYSDBA as an app user is a bad idea.

Michael