Re: On Normalisation & the State of Normalisation

From: Erwin <e.smout_at_myonline.be>
Date: Tue, 3 Feb 2015 00:13:01 -0800 (PST)
Message-ID: <a80360c7-309f-4a31-a4bf-6310def47570_at_googlegroups.com>

"The developer declares that the proposed extension satisfies 5NF. Is that correct ?"

(a) as is usually the case when unskilled people present a drawing of boxes and ask whether this satisfies xNF, the question isn't answerable because the dependencies haven't been stated.

(b) Assuming certain external predicates for the relvars that would at the logical level correspond to the boxes in your conceptual model, and also assuming a logical structure for the database that is kinda one-to-one with your drawing of boxes and lines, and also assuming the dependencies are as real life has them, in Belgium, the answer is no.
Received on Tue Feb 03 2015 - 09:13:01 CET

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