Re: Interpretation of Relations
From: David <davidbl_at_iinet.net.au>
Date: 22 Jan 2007 16:26:36 -0800
Message-ID: <1169511996.582733.273830_at_s48g2000cws.googlegroups.com>
Date: 22 Jan 2007 16:26:36 -0800
Message-ID: <1169511996.582733.273830_at_s48g2000cws.googlegroups.com>
Can someone outline a realistic example where we are forced to deal with missing information, and the approach of only storing the relations we know to be true using 6NF gets us into trouble?
The relational algebra allows us to deduce new facts from existing facts. If you have less existing facts (ie that you know to be true) then the only problem is that there is less you can deduce.
What more could you want? Received on Tue Jan 23 2007 - 01:26:36 CET