Re: design question
Date: Wed, 05 Nov 2008 13:17:34 GMT
"Ed Prochak" <edprochak_at_gmail.com> wrote in message
On Oct 28, 3:06 am, robu..._at_gmail.com wrote:
> Walter Mitty wrote:
> > <robu..._at_gmail.com> wrote in message
> > Are you sure you don't mean "primary keys made up by composing several
> > foreign keys"? Just a guess on my part, since I don't really know what
> > you
> > mean.
> Sorry, I was in hurry so I was not very clear. I mean some people
> prefer to use surrogate (primary) keys instead of natural composite
> keys and then use foreign keys to surrogates just for making joins
> "faster". A bad idea in my opinion...
>I favor your view. There is a time and place for surrogates, but too
>many jump to using ID columns as the PK right away.
I also agree. I only use ID columns for "entity tables" not "relationship tables". And I only use them when there are no reliable natural keys available. Received on Wed Nov 05 2008 - 14:17:34 CET