Re: Hospital ERD
Date: Thu, 5 Feb 2004 17:42:51 GMT
Message-ID: <HsMH7F.Dt8_at_news.boeing.com>
Entities and relationships can be one and the same. The terminology is
ambiguous at best.
"Alan" <alan_at_erols.com> wrote in message
news:bvtkfe$1075hf$1_at_ID-114862.news.uni-berlin.de...
> The questions is about ERDs. ERDs do not contain tables, they contain
> entities and relationships, as well as certain constraints on these.
>
>
> "Mike Sherrill" <MSherrillnonono_at_compuserve.com> wrote in message
> news:lab42010rb2tbf1m5d04100if8q1o83ld4_at_4ax.com...
> > On Wed, 4 Feb 2004 20:12:50 +1000, "Peter Mount"
> > <info_at_petermount.au.com> wrote:
> >
> > >The theory being it's best to keep related data in only one table
> >
> > It's best to keep related data in related tables.
> >
> > --
> > Mike Sherrill
> > Information Management Systems
>
>
Received on Thu Feb 05 2004 - 18:42:51 CET