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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@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 Sat Jul 17 2004 - 20:30:35 CDT












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