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Re: NULLs: theoretical problems?

From: JOG <jog_at_cs.nott.ac.uk>
Date: Sun, 19 Aug 2007 06:57:11 -0700
Message-ID: <1187531831.518007.224570@g4g2000hsf.googlegroups.com> 





On Aug 19, 1:57 pm, JOG <j..._at_cs.nott.ac.uk> wrote:


> [snip] It means that the database and its CWA can quite happily state "There exists no

> proposition discussing a birthdate for Kate", but never "There exists

> no birthdate for Kate".




That is, of course, unless we have explicitly stated that in a
proposition of its own right, as proposed by Darwen & Date.
Received on Sun Aug 19 2007 - 08:57:11 CDT












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