Re: foundations of relational theory?

"andrewst" <member14183_at_dbforums.com> wrote in message news:3522589.1067088824_at_dbforums.com...
>
> Originally posted by Mike Preece
>
> > And 'normalisation'? You have to fit your data into a 2 dimensional
>
> > structure although you get the sneaking suspicion sometimes that it's
>
> > actually a lot more difficult to do so than it should be somehow?
>
> > That's because you're insisting on making life difficult for yourself.
>
> > Well go on if that's what rocks your boat. Knock yourself out!
>
> >
>
> Leaving aside the 2-dimensional fallacy, which Marshall has already
> addressed, what is it you imagine is so difficult about 1st normal form,
> which is what I think you are suggesting is difficult?
>
> When you have an Invoice with many Invoice Lines, in Pick you create a
> MV item for the lines. With an RDBMS, we create a separate table for
> the lines. That's all. No more difficult or more easy, just different.

Or a relation valued attribute with no extra table. Again, no more difficult; although, the result is much easier and much more predictable to use. Received on Sat Oct 25 2003 - 16:35:49 CEST