Re: The Practical Benefits of the Relational Model

From: Jan.Hidders <>
Date: 4 Oct 2002 15:04:40 +0200
Message-ID: <3d9d91e8$>

In article <>, Mikito Harakiri <> wrote:
>It is often emphasized how beatuful relational theory is, because it
>is based on the set theory. While there is undoubtedly some
>connections, but may I ask why set union is a basic relational
>operator, and intersection is not? (Intersection could be expressed
>via combination of join and projection).

Why do you ask questions and then put the answer right behind it in brackets? :-)

  • Jan Hidders
Received on Fri Oct 04 2002 - 15:04:40 CEST

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