Re: A question for Mr. Celko
From: --CELKO-- <jcelko212_at_earthlink.net>
Date: 17 Jul 2004 18:30:35 -0700
Message-ID: <18c7b3c2.0407171730.6f10388f_at_posting.google.com>
Date: 17 Jul 2004 18:30:35 -0700
Message-ID: <18c7b3c2.0407171730.6f10388f_at_posting.google.com>
>> 1NF doesn't seem to do anything but get in the way of things like
relation-valued or list-valued attributes. <<
EXACTLY! This means that I can use characteristic functions on columns, and therefore on rows, and therefore on table. No recursion, no self-references, no indeterminable sets, etc. Get a slightly advanced book on sets and look all the weird sets that are defined so that you are not sure what the elements are. Received on Sun Jul 18 2004 - 03:30:35 CEST