Re: Natural keys vs Aritficial Keys

From: paul c <>
Date: Mon, 18 May 2009 17:18:50 GMT
Message-ID: <_LgQl.28540$PH1.8588_at_edtnps82>

Walter Mitty wrote:
> "paul c" <> wrote in message
> news:0KfQl.28513$PH1.15846_at_edtnps82...

>> To most people, "natural" means "physical"

> That's not true in my experience. Most of the people I've dealt with tend
> to think a vehicle's VIN is a natural key, and a bank account's account
> number is a natural key. both of those entities are articificial to begin
> with, and therefore all their attributes are artificial. Still, your mileage
> may vary, if you've dealt with different people than I have.
> ...

Most people I know don't abstract at all. What's natural to them consists only of what they can see or have seen sometime, on a piece of paper or somesuch. Received on Mon May 18 2009 - 19:18:50 CEST

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