Re: what are keys and surrogates?
From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Mon, 28 Jan 2008 13:04:29 -0400
Message-ID: <479e0b1d$0$4069$9a566e8b_at_news.aliant.net>
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> frequently
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> program.
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> Why am I not surprised?
Date: Mon, 28 Jan 2008 13:04:29 -0400
Message-ID: <479e0b1d$0$4069$9a566e8b_at_news.aliant.net>
David Cressey wrote:
> "Bob Badour" <bbadour_at_pei.sympatico.ca> wrote in message
> news:479deace$0$4050$9a566e8b_at_news.aliant.net...
>
>>David Cressey wrote: >> >> >>>"Bob Badour" <bbadour_at_pei.sympatico.ca> wrote in message >>>news:479d16f3$0$4055$9a566e8b_at_news.aliant.net... >>> >>> >>>>Logical representations are representations to users. Physical >>>>representations are representations to the machine. >>> >>>The trouble with this definition is that the user of a machine is
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> frequently
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>>>another machine. >>>For example, the "user" of a database is frequently an application
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> program.
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>>>That application program is a machine. It has users. >> >>I fail to see a point in what you wrote.
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> Why am I not surprised?
Because you really didn't have a point... Received on Mon Jan 28 2008 - 18:04:29 CET