Re: Examples for one-to-one associations?
From: Keith H Duggar <duggar_at_alum.mit.edu>
Date: Tue, 8 Jun 2010 06:23:25 -0700 (PDT)
Message-ID: <ec72006d-be80-481b-a93d-e2ffecdfc40b_at_a30g2000yqn.googlegroups.com>
Date: Tue, 8 Jun 2010 06:23:25 -0700 (PDT)
Message-ID: <ec72006d-be80-481b-a93d-e2ffecdfc40b_at_a30g2000yqn.googlegroups.com>
On Jun 7, 2:25 pm, Bob Badour <bbad..._at_pei.sympatico.ca> wrote:
> Gene Wirchenko wrote:
> > On Sat, 5 Jun 2010 20:49:59 -0700 (PDT), hoodwill
> > <chase.saund..._at_gmail.com> wrote:
>
> >>Examples of one to ones:
>
> >>1) Spouse
>
> > You need a time element. Even given monogamy, many people have
> > been married more than once.
>
> Even more basic than that: Some folks are single.
Why is that an issue? If a person is single then they would not appear in the Spouse relation. one-to-one relations can be partial can they not?
KHD Received on Tue Jun 08 2010 - 15:23:25 CEST