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Home -> Community -> Usenet -> comp.databases.theory -> Re: Key attributes with list values was Re: What are the differences ...KEY

Re: Key attributes with list values was Re: What are the differences ...KEY

From: Bob Hairgrove <invalid_at_bigfoot.com>
Date: Sat, 25 Feb 2006 18:05:17 +0100
Message-ID: <ku210217jrbg80a57j5a2ssg0aismoqrtc@4ax.com> 





On 25 Feb 2006 08:53:28 -0800, "dawn" <dawnwolthuis_at_gmail.com> wrote:



>This is one of the reasons to possibly identify a

>candidate key as the primary key and restrict it to a single (although

>possibly composite) value.




A single key with a composite value is generally known as an
"intelligent key". If you google for this term, you will find lots of
reasons why this is generally considered to be a bad idea. I won't
repeat them here because it would be a waste of NG bandwidth.


--
Bob Hairgrove
NoSpamPlease_at_Home.com


Received on Sat Feb 25 2006 - 11:05:17 CST












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