sub-super entity physical design
From: stu <smcgouga_at_nospam.co.uk>
Date: Wed, 2 Oct 2002 15:51:13 +0100
Message-ID: <anf15f$7cu$1$8300dec7_at_news.demon.co.uk>
When doing er modeling what does sub-super entity map to? One table with a view for each sub type or lots of tables with a union view for the super type? Or something else?
Date: Wed, 2 Oct 2002 15:51:13 +0100
Message-ID: <anf15f$7cu$1$8300dec7_at_news.demon.co.uk>
When doing er modeling what does sub-super entity map to? One table with a view for each sub type or lots of tables with a union view for the super type? Or something else?
cheers
stu
Received on Wed Oct 02 2002 - 16:51:13 CEST