Re: Towards a definition of atomic

From: David Portas <REMOVE_BEFORE_REPLYING_dportas_at_acm.org>
Date: Fri, 1 Feb 2008 20:22:43 -0000
Message-ID: <X6ednWKTFvEO4j7anZ2dnUVZ8vidnZ2d_at_giganews.com>


"Bob Badour" <bbadour_at_pei.sympatico.ca> wrote in message news:47a34585$0$4044$9a566e8b_at_news.aliant.net...
>
> The important thing in this discussion is: The relational model treats
> domain values as neither composable nor decomposable. They are simply
> values upon which one may evaluate defined operations.
>
> Thus, no decompositions of attributes are meaningful from the perspective
> of the RM.

Aren't UNGROUP and UNWRAP decompositions of attributes in Tutorial D? If not, I don't know what you mean by "decomposition".

-- 
David Portas
Received on Fri Feb 01 2008 - 21:22:43 CET

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