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_at_g4g2000hsf.googlegroups.com>
Date: Sun, 19 Aug 2007 06:57:11 -0700
Message-ID: <1187531831.518007.224570_at_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 - 15:57:11 CEST