Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Re: Proposal: 6NF

Re: Proposal: 6NF

From: Gene Wirchenko <genew_at_ocis.net>
Date: Thu, 19 Oct 2006 18:58:41 -0700
Message-ID: <r5bgj25h401jatnmc12q9lcj6ph89t0kqj@4ax.com>


"vc" <boston103_at_hotmail.com> wrote:

>Gene Wirchenko wrote:
>> "vc" <boston103_at_hotmail.com> wrote:
>>
>> >JOG wrote:
>>
>> [snip]
>>
>> >> As far as I understood from my school years, an operation just mapped
>> >> one set of values to another. I remain unconvinced of the need for an
>> >> operation upon a set to map to itself.
>> >
>> >f:SxS -> S is not "a set to map to itself". We are talking here about
>>
>> The page you suggested sure seems to say that though!
>
>It's an odd interpretation. f:S -> S is 'a set to map to itself', but
>g:SxS -> S clearly is not.

     You were the one who pointed out the page. You did read it first to make sure it said what you wanted, right?

Sincerely,

Gene Wirchenko

Computerese Irregular Verb Conjugation:

     I have preferences.
     You have biases.
     He/She has prejudices.
Received on Thu Oct 19 2006 - 20:58:41 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US