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Re: MV Keys

From: x <x_at_not-exists.org>
Date: Thu, 2 Mar 2006 11:45:08 +0200
Message-ID: <du6er9$d89$1@emma.aioe.org>

"Marshall Spight" <marshall.spight_at_gmail.com> wrote in message news:1141267829.869557.170030_at_t39g2000cwt.googlegroups.com...
> David Cressey wrote:
> > "Marshall Spight" <marshall.spight_at_gmail.com> wrote
> >
> > > To my current way of thinking, there are only the two compound types:
> > > list and set.
> >
> > A tuple is a compound type. And I don't think a tuple is either a list
or a
> > set.

> An n-ary tuple is an n-ary relation whose cardinality is constrained to
> be exactly 1. Lots of people hate this idea, but it seems to work
> very well.

 An n-ary tuple is an 2-ary relation whose cardinality is constrained to  be exactly n. Lots of people hate this idea, but it seems to work  very well. Received on Thu Mar 02 2006 - 03:45:08 CST

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