Re: Normalisation
From: VC <boston103_at_hotmail.com>
Date: Sun, 10 Jul 2005 19:47:28 -0400
Message-ID: <MtydnXXi2PcTLkzfRVn-2Q_at_comcast.com>
Date: Sun, 10 Jul 2005 19:47:28 -0400
Message-ID: <MtydnXXi2PcTLkzfRVn-2Q_at_comcast.com>
"Jan Hidders" <jan.hidders_at_REMOVETHIS.pandora.be> wrote in message
news:AyVye.138732$g63.7370802_at_phobos.telenet-ops.be...
[...]
> Ah, but now you are using the domain or relations, right? There is a
> problem with that domain. It doesn't exist. The collection of all
> relations is a proper class, and not a set, but domains have to be sets.
The collection of all relations is most certainly a set, and therefore, a domain, domain being a synonym of set. The term "proper class" implies that you talk in terms of set theory other than ZF ( Zermelo - Fraenkel ) ). There is no need to do so for the reltional model unless you can show there is ;)
>
> -- Jan Hidders
Received on Mon Jul 11 2005 - 01:47:28 CEST