Re: Natural keys vs Aritficial Keys

From: paul c <toledobythesea_at_oohay.ac>
Date: Fri, 29 May 2009 15:04:02 GMT
Message-ID: <CPSTl.29789$PH1.26921_at_edtnps82>


David BL wrote:
> On May 29, 9:53 pm, paul c <toledobythe..._at_oohay.ac> wrote:

>> David BL wrote:
>>
>> ...
>>
>>> I have no idea what you mean by "relvars are structures (not logical
>>> pointers presumably?".  Please quote me rather than pretend to quote
>>> me.
>>  >   "...  However with other ways of
>>  >> composing data structures, sub-variables may not exist.  A relvar is
>>  >> one such example. ..."
>> ...
>>
>> There's your quote for the second time.

>
> Good that's better. When I talk about composing data structures I'm
> speaking informally. If I wanted to be more precise I might talk
> about the way values can compose, or types can compose, or perhaps
> even see whether it's possible to formalise an idea that variables
> compose.
>
> Now, what is your point?
>

Until you start being more precise, you will continue to go 'round in circles, mixing up concepts and losing the essential ones. Received on Fri May 29 2009 - 17:04:02 CEST

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