On the weekend I tried to backup and restore a database to reorganize
it. The restored failed with duplicate keys in a primary key
constraint. How is this possible? The primary key constraint should
have prevented the creation of duplicate keys in the first place. And
before you ask, this constraint has been in place since the database
was created. It has never been set inactive because you can't
inactivate a primary key constraint. There has never been any hint of
data corruption either. I'm using Firebird 1.0.3 on W2K.