Subject Re: [firebird-support] Re: Null Foreign Keys
Author Nando Dessena

M> As far as I can remember, IB and Fb1 did allow one NULL into an
M> unique INDEX, but not in a constraint. I might be wrong there though.

no, not even one.
And, confusion between keys and indexes is surely one of the top 5 misconceptions
heard at database classes!

Nando mailto:nandod@...