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Re: Thinking about MINUS

From: paul c <toledobythesea_at_oohay.ac>
Date: Mon, 08 Jan 2007 11:32:25 GMT
Message-ID: <dZpoh.590897$R63.114568@pd7urf1no> 





Marshall wrote:


...


> Ah, but when we are joining, which is to say unifying, two relations,

> and the two relations each make different, *incompatible* claims

> about the type associated with a particular attribute name, then

> I would say that well meets the criteria for being "contradictory."

> ...




Well, if I have 10 Navel Oranges and 10 Tangerine Oranges and I ask how 
many Florida Oranges I've got, I would hope the answer would be zero, 
not "contradiction".



p
Received on Mon Jan 08 2007 - 05:32:25 CST












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