Re: MV Keys
Date: Tue, 7 Mar 2006 09:28:20 +0200
Message-ID: <dujcmm$4eb$1_at_emma.aioe.org>
"mAsterdam" <mAsterdam_at_vrijdag.org> wrote in message
news:440cb7e8$0$11062$e4fe514c_at_news.xs4all.nl...
> Jon Heggland wrote:
> > dcressey says...
> >
> >>>Join is crucial, and depends on equality between "cells". But with
> >>>multiple values, how do you define equality?
> >>>
> >>>Is (apples, pears) equal to (pears, apples)?
> >>
> >>An alternative example would be:
> >>Is (onions, mushrooms) equal to (mushrooms, onions)?
> >>I bleieve I've aske this question several times.
> >
> > I think the answer is obvious: It is whatever we define it to be. We
> > just have to make the decision at some point.
> This is like choosing the right or the left side of the road.
> You don't. You may choose the country where you are going to
> drive, but that's it.
You'll have to know when you crossed the border. Received on Tue Mar 07 2006 - 08:28:20 CET