Re: Natural keys vs Aritficial Keys

From: Bob Badour <>
Date: Thu, 28 May 2009 18:14:45 -0300
Message-ID: <4a1efeb8$0$23737$>

paul c wrote:

> Walter Mitty wrote:

>> "David BL" <> wrote in message
>>> The ORM idea makes the blunder because it assumes incorrectly that the
>>> values within a set can be identified independently of their value.
>>> ORM wants to make this assumption so that a variable that records a
>>> set of values can instead be interpreted as a set of variables.
>> The last several exchanges in this thread have gone over my head. Oddly
>> enough, this last paragraph brings the discussion full circle, back to
>> where
>> I started.
>> Consider a set of tuples. Or maybe a set of current states of
>> tuple-variables. (That's the part that's over my head.)

That's the blunder right there, Walter. Tuples are not variables. Tuples are values. Received on Thu May 28 2009 - 23:14:45 CEST

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