From: Gordon Yorke <gordon.yorke_at_oracle.com>
Date: Fri, 28 Jul 2006 11:45:13 -0400

Marina,
   The RI does require a discriminator column for InheritanceType.JOINDED and yes users are responsible for changes to existing tables if they are not already using a form of discriminator column.
--Gordon

-----Original Message-----
From: Marina.Vatkina_at_Sun.COM [mailto:Marina.Vatkina_at_Sun.COM]On Behalf Of
Marina Vatkina
Sent: Thursday, July 27, 2006 8:57 PM
To: persistence
Subject: InheritanceType.JOINED and discriminator column?


Tom, Gordon,

Does TopLink require discriminator column for InheritanceType.JOINED?
If yes, are the users responsible for changes to existing tables if
they didn't have this column?

thanks,
-marina