Mandatory on one side of one to many?
From: Mike MacSween <mike.macsween.nospam_at_btinternet.com>
Date: Sun, 5 Sep 2004 10:48:40 +0100
Message-ID: <413ae0f6$0$6335$5a6aecb4_at_news.aaisp.net.uk>
Production (one) to events (many)
Date: Sun, 5 Sep 2004 10:48:40 +0100
Message-ID: <413ae0f6$0$6335$5a6aecb4_at_news.aaisp.net.uk>
Production (one) to events (many)
Events must have a production (easy, non null FK)
A Production doesn't make (business) sense without an event. How to enforce a mandatory relationship on the one side?
Any ideas?
Cheers, Mike MacSween Received on Sun Sep 05 2004 - 11:48:40 CEST