Re: MV Keys

From: David Cressey <>
Date: Thu, 02 Mar 2006 13:33:35 GMT
Message-ID: <PuCNf.675$ZL1.646_at_trndny09>

"Jon Heggland" <> wrote in message
> In article <ZpvNf.36309$>,
> says...
> > A tuple is a set of named values. It is not a type. It is an element
of a
> > relation.
> In the spirit of sharing opinions: A tuple is not a type, but a tuple
> *has* a type. It is very convenient to have tuple types (and relation
> types) when doing database programming.
> --


If you have set types and tuple types, do you need to define relations separately as a type? Can't you merely define a relation as a set of tuples? Or is that, in itself, a type definition? Received on Thu Mar 02 2006 - 14:33:35 CET

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