Re: WWW/Internet 2009: 2nd CFP until 21 September x
From: paul c <toledobythesea_at_oohay.ac>
Date: Sat, 15 Aug 2009 21:43:34 GMT
Message-ID: <a_Fhm.41432$PH1.13551_at_edtnps82>
Date: Sat, 15 Aug 2009 21:43:34 GMT
Message-ID: <a_Fhm.41432$PH1.13551_at_edtnps82>
Walter Mitty wrote:
...
> Where a lot of database designers go awry is to assign "meaning" to missing
> data. For example, if spouse's first name is missing, it means the person
> has no spouse. People who set up information systems with this kind of
> conventional interpretation are entering the quicksand. I guess, to come
> back to your comment of a few replies back, this means that I share your
> qualms about the CWA. If there is no passenger named Yussuf Islam on the
> passenger list, it could mean that there is no such passenger on the plane,
> or it could mean that the passenger list is incomplete or incorrect. (I may
> be misrepresenting your position on the CWA, but you get the idea.)