JOG wrote:
> Jon Heggland wrote:
>> FWIW, I don't endorse the entity-attribute thinking you (and JOG)
>> indulge in. It confuses the issue, and does not contribute anything. For
>> example, I consider treating colour and paper differently a flaw, not an
>> advantage.
>
> Exactly Jon - there is no difference between them and treating them so
> is flawed . Dawn has assumed a colour is a 'weak entity', but there is
> no justification for this assumption from the propositions that were
> inititally supplied.
Actually, as far as I can tell it was you that introduced the term "weak
entity" in this context, and it is incorrect. Neither colour nor shoe
size is a weak entity, unless my shoe size (44) is something different
from my brother's shoe size (also 44); ditto for colours. Likewise, the
shoe size 44 does not cease to exist just because the tuple describing
its relationship to me is deleted. That discussion shows signs of less
than clear thinking on more than one part.
--
Jon
Received on Thu May 04 2006 - 09:01:17 CDT
