Re: Natural keys vs Aritficial Keys
From: paul c <toledobythesea_at_oohay.ac>
Date: Sat, 30 May 2009 04:22:24 GMT
Message-ID: <4w2Ul.29995$PH1.8214_at_edtnps82>
>
> You aren't making yourself clear. So how do you deduce I'm mixing
> concepts by referring to relvars?
>
Date: Sat, 30 May 2009 04:22:24 GMT
Message-ID: <4w2Ul.29995$PH1.8214_at_edtnps82>
David BL wrote:
> On May 30, 10:30 am, paul c <toledobythe..._at_oohay.ac> wrote:
>> David BL wrote: >>> .... >>> Minimal theory of what? A relational database by definition has >>> relvars. Relvars are essential to relational database theory. >>> .... >> I think you have looked at TTM with the same casualness as you proof >> your own paragraphs. TTM is about a language, very little of it has to >> do with the RM, certainly not relvars.
>
> You aren't making yourself clear. So how do you deduce I'm mixing
> concepts by referring to relvars?
>
As i said, I'm not interested in conversation. I'm here only to learn from people who sometimes have aperceived more than I have and in return try to maybe once in a while provoke them into re-assessing the precepts they're hip to I'm not the one to answer any old question that occurs to any and every poster who pops up here. Received on Sat May 30 2009 - 06:22:24 CEST