Re: Base Normal Form

From: Gene Wirchenko <genew_at_ucantrade.com.NOTHERE>
Date: Mon, 11 Jul 2005 09:57:47 -0700
Message-ID: <f495d1lt7g9fj7u2s8tt5iv9k7614krm9q@4ax.com>

On Fri, 08 Jul 2005 22:42:27 GMT, Jan Hidders <jan.hidders_at_REMOVETHIS.pandora.be> wrote:

[snip]

>Note by the way that the link between functional dependencies and
>interpreting relations as functions is very close. If the relation
>R(A,B,C,D,E) has the dependencies AB->C and BD->E and ABD->C the I
>wouldn't say it represents a function, I would say it represents three
>functions.

I struggle to follow these arguments. In the above, I think that there is an error or something questionable. If AB->C then ABanything->C (as in ABD->C), but what is the point?

Sincerely,

Gene Wirchenko Received on Mon Jul 11 2005 - 11:57:47 CDT