Re: Database-valued attributes?

From: Paul Vernon <paul.vernon_at_ukk.ibmm.comm>
Date: Tue, 11 Nov 2003 15:21:15 -0000
Message-ID: <boquvj$1o30$1@gazette.almaden.ibm.com>

"Bob Badour" <bbadour_at_golden.net> wrote in message news:srWdneQR1as5SC2iRVn-hg_at_golden.net...
> All you have done is describe a data type with a possrep consisting of two
> RVA's. Such a data type is perfectly acceptable. The equivalent of a
> "database value" with multiple views would be a similar type with multiple
> possreps.

Q. Do D&D explicitly define what a possiable representaion is. I.e. is a poss rep with more than 1 component a tuple of those components, or a list, a set, an array or just 'a thing with components'?

E.g. would

POSSREP XY_POINT { X NUMERIC, Y NUMERIC } be the same poss rep as

POSSREP XY_POINT { Y NUMERIC, X NUMERIC } in thier book?

Regards

Paul Vernon

Business Intelligence, IBM Global Services Received on Tue Nov 11 2003 - 09:21:15 CST