Re: On Normalisation & the State of Normalisation

From: Erwin <e.smout_at_myonline.be>
Date: Thu, 5 Feb 2015 06:47:09 -0800 (PST)
Message-ID: <a24a286a-4212-40b3-bcee-782ca8bd2d0b_at_googlegroups.com>


Op donderdag 5 februari 2015 15:05:08 UTC+1 schreef Nicola:
> In article <>,
> Jan Hidders <> wrote:
>
> > > 1. The developer declares that the proposed extension satisfies 5NF. Is
> > > that correct ? If not, please state why, which NF is breaks, any errors
> > > that it may have, etc. A few words will suffice. I expect minimal
> > > discussion, but don't let me stop you.
> >
> > Yes, it is in 5NF. But it is not dependency preserving.
>
> Which dependencies are not preserved? With respect to what schema?
>
> Nicola
>

If I tell him that, he tells me to learn to read. Received on Thu Feb 05 2015 - 15:47:09 CET

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