Re: Ternary Relationship cardinality
From: J M Davitt <jdavitt_at_aeneas.net>
Date: Tue, 19 Sep 2006 00:00:30 GMT
Message-ID: <yqGPg.7444$8e5.2136_at_tornado.ohiordc.rr.com>
Date: Tue, 19 Sep 2006 00:00:30 GMT
Message-ID: <yqGPg.7444$8e5.2136_at_tornado.ohiordc.rr.com>
miklesw_at_gmail.com wrote:
> Hi,
>
> I am working on an assignment which has 2 ternary relationship. I'm
> can't figure out their cardinality.
>
> Maybe I am going through one of those mental blocks...
>
> Can someone give me some cardinality examples for N-ary relationships?
> all the pics i found on google images don't include this..
>
> My other option is to convert the 3-ary relationship into a weak
> entity.. but I'll definitely loose marks on that
>
> Is it ok to have N'ary Relationships which includes recursion? looks
> kind of odd to me
> eg [person](buyer) trades [item] with [person](seller)
Recursion? How so? Received on Tue Sep 19 2006 - 02:00:30 CEST