Re: NULLs: theoretical problems?

From: Keith H Duggar <duggar_at_alum.mit.edu>
Date: Sun, 19 Aug 2007 11:08:26 -0700
Message-ID: <1187546906.845223.287450@g4g2000hsf.googlegroups.com>

On Aug 16, 7:05?| pm, Jan Hidders <hidd..._at_gmail.com> wrote:

> Btw. your interpretation of null values is basically the "missing
> value" interpretation, with which theoretically speaking, there is of
> course no problem whatsoever. But your insistence that NULL somehow at
> the same time a marker that indicates that a value is missing and is
> also a value itself (because an element of the domain) is a little bit
> suspect. There are better and more consistent ways of describing
> missing values.

Will you please elaborate on those methods you consider better and more consistent? Thank you.

KHD Received on Sun Aug 19 2007 - 13:08:26 CDT