Re: Meaning of 1:1, 1:1 generalization, 1:n, 1:n non identifying, n:m
From: mAsterdam <mAsterdam_at_vrijdag.org>
Date: Fri, 01 Oct 2004 12:52:17 +0200
Message-ID: <415d36e5$0$43451$e4fe514c_at_news.xs4all.nl>
Date: Fri, 01 Oct 2004 12:52:17 +0200
Message-ID: <415d36e5$0$43451$e4fe514c_at_news.xs4all.nl>
Joshua Beall wrote:
> I've been taking a look at DB Designer 4, and looking through the
> documentation (http://www.fabforce.net/dbdesigner4/doc/index.html) I am a
> little unclear on some of their nomenclature:
>
> '1:1' - Ok, one to one. Got it.
> '1:1 generalization' - Don't know this. Obviously different somehow from
> one to one, but how?
> '1:n' - One to many, I assume.
> '1:n non identifying' - Nonidentifying? What does this mean?
> 'n:m' - Many to many? Again, not sure.
>
> Can anyone help clarify?
Your question boils down to:
"What do these mean in the context of that product".
There are forums at the vendors website.
Your chances of getting an answer are much better there.
Received on Fri Oct 01 2004 - 12:52:17 CEST