Subject Re: Firebird ignores primary Key definition
Author Svein Erling
> I seem to recall that one of 1.0.x releases actually allowed you to
> set the PK index inactive. You can't do it in 1.5 - worth checking
> 1.0.3?

"Action cancelled by trigger (3) to preserve data integrity. Cannot
deactivate primary index."

This was on 1.0.2, so I guess it must have been one of the earlier
releases that failed to preserve data integrity.