Re: IS it a good practice to use SERIAL as Primary Key?

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От Ron Johnson
Тема Re: IS it a good practice to use SERIAL as Primary Key?
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Msg-id 456B2DB4.3010609@cox.net
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Ответ на Re: IS it a good practice to use SERIAL as Primary Key?  (Scott Ribe <scott_ribe@killerbytes.com>)
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On 11/27/06 11:26, Scott Ribe wrote:
>> Bottom line: check digits are in SSNs
>
> Uhm, no they're not. And this is of course one of the huge problems with
> SSNs. (Although not quite as bad as the fact that they're not strictly
> unique. Yes, really, duplicates have been issued in the past.)

Hmm, you're right.  Other kinds of important numbers have check
digits, though.

http://www.cs.nmsu.edu/~cssem/DickOct18.pdf

- --
Ron Johnson, Jr.
Jefferson LA  USA

Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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