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Re: Multiple-Attribute Keys and 1NF

From: Neo <neo55592_at_hotmail.com>
Date: Mon, 03 Sep 2007 21:05:50 -0700
Message-ID: <1188878750.375050.78170@y42g2000hsy.googlegroups.com> 





> What would be wrong with a second color that is not nullable?

>

> Type    Color1  Color2

> ======  ======  ======

> live    Brown   Brown

> live    Red     Red

> neutral Black   Black

> neutral Blue    Blue

> earth   Green   Yellow




Redundancy.
Received on Mon Sep 03 2007 - 23:05:50 CDT












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