Re: candidate keys in abstract parent relations
From: David Cressey <dcressey_at_verizon.net>
Date: Fri, 20 Jan 2006 21:41:06 GMT
Message-ID: <SNcAf.12$nQ3.7_at_trndny03>
Date: Fri, 20 Jan 2006 21:41:06 GMT
Message-ID: <SNcAf.12$nQ3.7_at_trndny03>
"Forrest L Norvell" <spankysyourpal_at_gmail.com> wrote
> Yes. This is where I've been blocked for several weeks now. I guess the
In other words, is the relationship between Albums and Releases mandatory
(minimum cardinality 1)? I think this question is germane?
> simplest way of stating it is, is there value to separating an Album
> from a Release? Does it make sense to think about an Album as some sort
> of Platonic ideal entity that exists independent from a release?
>
Just as an aside, what would an Album look like if there were no Releases on
it?
What would a Release look like, if there were no related Album? Received on Fri Jan 20 2006 - 22:41:06 CET