Re: 2 unique vals
From: Tony <andrewst_at_onetel.net.uk>
Date: 5 Jan 2004 14:07:39 -0800
Message-ID: <c0e3f26e.0401051407.339a2028_at_posting.google.com>
Date: 5 Jan 2004 14:07:39 -0800
Message-ID: <c0e3f26e.0401051407.339a2028_at_posting.google.com>
shannon <shannon_at_nolunchmeat.com> wrote in message news:<btbsju$2nb$03$2_at_news.t-online.com>...
> in the construction of an ERD, how do we proceed when an Entity has two
> attributes with unique values?
>
> thanks
ERDs are limited in what they can show. There are various ERD styles, but as far as I know most can only show one unique key pictorially. You have to document the others elsewhere, i.e. in supporting documentation. Received on Mon Jan 05 2004 - 23:07:39 CET