Re: Question on Structuring Product Attributes

This one should not pass unnoticed.

On Monday, 18 February 2013 09:09:15 UTC+11, Eric wrote:
>
> To quote from Codd[1970]:
>
> "A firstorder predicate calculus suffices
> if the collection of relations is in normal form."

Codd specifies what that Normal Form is, that reference is not merely a generic or general term.

And the asylum dwellers propose that the RM has nothing to do with Normal Forms.

(It should be noted that they have instead, defined, and marketed, various abnormal forms that have (a) nothing to do with the RM and (b) nothing to do with Normal Forms, as "normal forms". Clever. in the lunatic sense.)

There is a second, consequential point, that if one understands and implements the RM in its un-perverted form, ie. the Normal Form specified therein, "first order predicate logic suffices". I have scores of Relational databases in which that is true.

Cheers
Derek Received on Mon Sep 30 2013 - 02:59:56 CEST