Re: Another view on analysis and ER

From: rpost <>
Date: Thu, 06 Dec 2007 18:50:51 +0100
Message-ID: <eb56f$4758367b$839b4533$>

David Cressey wrote:

>Bingo! That's the big problem with the literature on ER. Many ER
>proponents use ER as if it were a design artifact. I think that 's a
>misapplication of the artifact, and I'm pretty sure Peter Chen would agree.
>If one is designing a relational system (including but not limited to a
>relational database) then using the relational model to capture the design
>is a much better idea.

Well, that reflects what "we" teach: make a model in ER then convert it into a logical relational design. I thought it was how ER is *always* used. Apparently I'm wrong.

Reinier Post
TU Eindhoven
Received on Thu Dec 06 2007 - 18:50:51 CET

Original text of this message