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$PH1.26921_at_edtnps82>
>
> Good that's better. When I talk about composing data structures I'm
> speaking informally. If I wanted to be more precise I might talk
> about the way values can compose, or types can compose, or perhaps
> even see whether it's possible to formalise an idea that variables
> compose.
>
> Now, what is your point?
>
Date: Fri, 29 May 2009 15:04:02 GMT
Message-ID: <CPSTl.29789$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