> From: Alexander V.Nevsky
> > Do you mean by that that the -r option is
> > dangerous?
>
> Theo, yes, it is dangerous. Let's say gbk is unrestorable and you
> don't know about it. Simply example - null in _not null_ column, we
> can make this mistake ourselves changing metadata, sometimes such a
> records appears when server crashed with unfinished garbage collection
> process. Such a corruption is not checked on backup, it's too
> expensive.

Checking referential (and unique) constraints would be expensive,
but checking Not Null should be cheap.

Ivan
http://www.volny.cz/iprenosil/interbase