I think you can add before update and before insert trigger to
accomplish this.
Ales Kahanek

> -----Original Message-----
> From: szsani [mailto:ssani@...]
> Sent: Monday, February 04, 2002 4:27 PM
> To: ib-support@yahoogroups.com
> Subject: [ib-support] Foreign key question
>
>
> Hi all
>
> Is there any way to create foreign key to ensure Table1.Field1 value
> exists in Table2.Field1 or Table3.Field1?
>
> Thanks in advance
>
> Sandor Szollosi
>