Re: 2nd Normal Form Question

From: Bob Badour <>
Date: Fri, 08 Feb 2008 12:39:58 -0400
Message-ID: <47ac85df$0$4030$>

gamehack wrote:

> Hi all,
> I'm currently evaluating whether a relation is in 2NF. The relation is
> defined as follows:
> <Year | Winner Name | Winner Votes | Party | Home State> in the
> context of an election. I've given a sample relation below.
> 1946 | MyName | 453 | MyParty | California
> The primary key for this relation is 'Year'.
> Now the question is whether this relation is in 2NF? What confuses me
> is that some books say the following:
> "Note that when a 1NF table has no composite candidate keys (candidate
> keys consisting of more than one attribute), the table is
> automatically in 2NF."

I am not sure where you read that. It sounds like a typo or a mistake. Composite keys are important at the higher normal forms. Received on Fri Feb 08 2008 - 17:39:58 CET

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