Re: Entity vs. Table

From: Laconic2 <laconic2_at_comcast.net>
Date: Thu, 10 Jun 2004 10:16:29 -0400
Message-ID: <Ie6dneGf_Y518VXdRVn-uA@comcast.com>

"Alan" <alan_at_erols.com> wrote in message news:2ir6udFphm1rU1_at_uni-berlin.de...

> There are definite rules to convert an ERD (your logical design) into
tables
> (the physical implementation) to achieve 3NF, but you obviously don't know
> about them.

Just a quibble about terminology (sigh).

I don't think of ERD as "logical design". I think of ERD as part of "analysis", and the resulting model to be a "conceptual model" or an "analysis model", but not a design.

Having said that, I strongly endorse ER as a useful early step in the process of understanding the data. Received on Thu Jun 10 2004 - 09:16:29 CDT