Re: Is this bad design ?

From: ben brugman <ben_at_niethier.nl>
Date: Thu, 11 Mar 2004 10:31:28 +0100
Message-ID: <405031f0$0$6574$4d4ebb8e@read.news.nl.uu.net>

>
> Yes, it is a bad design. The Valid_Mothers relvar has no need for the
> boolean attribute and the Valid_Children relvar has no need for the
boolean
> attribute. Valid_Children has a simple reference to Valid_Mothers.

How do you come to the conclusion that there is no need for the boolean attribute ?

>
> The existence of a tuple suffices as a statement of truth, which is why
DEE
> and DUM are such important relations.

Don't use TLA without explaining them.
There is far to much TLA overloading to understand them just from context.

Ben
>
>
Received on Thu Mar 11 2004 - 03:31:28 CST