Re: 4NF is Where It Is At! [WAS Re: 1:1 relationships]
From: Jan Hidders <hidders_at_REMOVE.THIS.win.tue.nl>
Date: 13 Feb 2001 16:31:08 GMT
Message-ID: <96bngc$soo$1_at_news.tue.nl>
Date: 13 Feb 2001 16:31:08 GMT
Message-ID: <96bngc$soo$1_at_news.tue.nl>
Peter Franklin wrote:
> I have been watching this thread hoping to be enlightened as to what
> 4NF actually is, as I have never been able to understand Date's
> definition. All the time I couldn't see where this example differed
> from "plain good old 3NF", but put this down to my stupidity.
>
> Thank you, Jan :-)
You're welcome. :-) And if you have any questions about 4NF I will be
quite happy to answer them. The problem is usually understanding what
exactly is a multi-valued dependency. I think I already gave a formal
definition earlier in this thread. Would you like a small example?
--
Jan Hidders
Received on Tue Feb 13 2001 - 17:31:08 CET