Re: Multi Valued Interface Models?
Date: Tue, 14 Feb 2006 16:58:35 +0200
Message-ID: <dssr71$jga$1_at_nntp.aioe.org>
"JOG" <jog_at_cs.nott.ac.uk> wrote in message news:1139926964.998518.104170_at_g47g2000cwa.googlegroups.com...
> Perhaps considering an example mathematically might illuminate matters.
> In MV:
>
> "The Person with name(x) has email(y) and email(z)"
>
> obviously holds identical information as the 1NF propositions:
>
> "The Person with name(x) has email(y)"
> "The Person with name(x) has email(z)"
> So whether it uses non-1NF or 1NF the "view" holds _exactly_ the same
> information (as in it is mathematically identical). Are you denying
> this dawn?
> If not, all it takes is the refresh function to make two calls to the
> view's internal storage instead of one. This might be less efficient
> but it certainly isn't invalid or impossible, which appears to be your
> blog's standpoint.
It might take an unbounded number of calls and there is a need to model this sequence (or whatever) of calls. Received on Tue Feb 14 2006 - 15:58:35 CET