Re: Entity vs. Table

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"Alan" <alan_at_erols.com> wrote in message news:2j5p8mFts6l4U1_at_uni-berlin.de...
>
> ----- Original Message -----
> From: "Alfredo Novoa" <alfredo_at_ncs.es>
> Newsgroups: comp.databases.theory
> Sent: Monday, June 14, 2004 9:27 AM
> Subject: Re: Entity vs. Table
>
>
> > "Alan" <alan_at_erols.com> wrote in message
> news:<2ittqgFqitf3U1_at_uni-berlin.de>...
> >
> > > It's not a requirement, but it is a starting point. If you start with
a
> 3NF
> > > physical model, you can denormalize for the sake of performance.
> >
> > Physical designs can't be 3NF. Normalization only applies to the
> > logical level.
> >
>
>
> I am talking about an implementation of a 3NF logical design in a physical
> model. I didn't state it clearly.
>

I think the misunderstanding come from the term "physical model". I think Alan consider a table part of the "physical model" and a relvar a part of the "logical model" on paper, not in the computer.

As if mathematical logic cannot be computerized ...

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