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Re: Functional Dependencies?

From: -CELKO- <jcelko212_at_earthlink.net>
Date: 1 Oct 2005 08:30:13 -0700
Message-ID: <1128180613.486016.257480@g47g2000cwa.googlegroups.com> 





A functional dependency A -> B says  "A determines B", so if you know a
value for an A, then you can determine the value of a a B.   A
multi-valued Dependency, A ->> B says "A determines a set of Bs".



Google Armstrong's Axioms for the ruels that govern these operations.
Received on Sat Oct 01 2005 - 10:30:13 CDT












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