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Please help me with Relational Database design

From: <_at_s>
Date: Wed, 5 Mar 2003 22:52:18 +0100
Message-ID: <b45rin$c83$1@news1.tilbu1.nb.home.nl> 





Hello,



I have an exam in Relational Database design in a few weeks, and I can't
find out how to use the Armstrong Axioms.
These are reflexivity, augmentation and transitivity.
It looks


For example, how can I proof (with Armstrong):


? -> ? |- ?? -> ?




It looks very easy, but I can't find out how exactly it works.



Hope you can help me.


Thanx,



@s
Received on Wed Mar 05 2003 - 15:52:18 CST












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