Re: About Entity Relation Diagram
From: mAsterdam <mAsterdam_at_vrijdag.org>
Date: Fri, 17 Dec 2004 16:28:38 +0100
Message-ID: <41c2faaa$0$79493$e4fe514c_at_news.xs4all.nl>
Date: Fri, 17 Dec 2004 16:28:38 +0100
Message-ID: <41c2faaa$0$79493$e4fe514c_at_news.xs4all.nl>
Mark D Powell wrote:
> Traditionaly in RDBMS theory the ER design is the logical design while
> the actual implementation of the tables is the physical design
What is physical about tables?
> "Logical design in RDBMS expressed in E-R diagrams"
> http://www.cob.sjsu.edu/sadhwa_a/database%20lecture%20Bus%2093.ppt
>
> This agrees with several texts I have packed away at home, but the the
> specifics or border between logical and physical design varies by
> author.
Some mistakes get copied over and and over again. Is this one of them, or is there more to it? Received on Fri Dec 17 2004 - 16:28:38 CET