At 09:53 PM 7/20/2001 +0200, Nico Callewaert wrote:

>Thanks for the answer.
>Ann, what about the article_ID field, many fields could be empty, then I
>guess I better generate a normal index on that field ?

That's what I would do. I might lobby to have Firebird accept nulls
in a unique index (which I think is what the standard says to do.)


Regards,

Ann
www.ibphoenix.com
We have answers.