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Compound Key vs Composite Key

CJM
10/29/2003 3:37:14 PM

inetserver asp db:

Many moons ago, I did an SSADM course... in it I learnt the formal meanings
of 'Compound' & 'Composite' keys...

Recently, I was talking with a colleague, and where he used 'Composite', I
used 'Compound', but strangely neither of us noticed the discrepancy and
both of us were clear and in agreement.

Thinking about it since, I've been trying to remember what the definitions
and therefore the differences were... but I can't remember. What is more,
when I did some research on the web, I've found both terms described as
meaning exactly the same thing... which is in keeping with the way we use
the words interchangeably now.

I'm 100% convinced that there was some subtle difference, but I can't find
any verification of this now.

So are there two subtly different meaning or did I just imagine it all?

Cheers

Chris

RE: Compound Key vs Composite Key

lukezhan NO[at]SPAM online.microsoft.com
10/30/2003 2:25:25 AM

Hi Chris,

You may read following article to see if it will help. It has a section for
these two kind of keys:

http://www.cms.livjm.ac.uk/library/CMSCS201/SAD5.DOC

Luke
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)

Re: Compound Key vs Composite Key

CJM
10/30/2003 9:25:12 AM

Thanks Luke,

The explanation given in that document is better than the original one I was
given 10 years ago I think. Or maybe I am just older and wiser.

Thanks

Chris

Re: Compound Key vs Composite Key

Tibor Karaszi
10/30/2003 12:21:51 PM

I don't think I've ever seen any difference between the two, FWIW...

--
Tibor Karaszi, SQL Server MVP
Archive at: http://groups.google.com/groups?oi=djq&as_ugroup=microsoft.public.sqlserver

[quoted text, click to view]

Re: Compound Key vs Composite Key

CJM
10/30/2003 12:30:31 PM

"Tibor Karaszi" <tibor.please_reply_to_public_forum.karaszi@cornerstone.se>
[quoted text, click to view]

This is precisely my point.

There is in theory a difference between the two, but nevertheless we seem to
use them interchangeably. It doesnt really matter that much, it's more a
case of satisfying my own personal curiosity. In practical terms, the
difference is negligible.

Cheers

Chris

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