Re: Re:

Is there any modeling tool that provides diagrammatic support in pure Chen notation?

• Dan

"Paul Vernon" <paul.vernon_at_ukk.ibmm.comm> wrote in message news:b2ahc8$oqm$1_at_sp15at20.hursley.ibm.com...
> "The Oyster" <the_oyster_at_libero.it> wrote in message
> news:ffdcf1a657981b3f9cbc56f60d3b7d65.46970_at_mygate.mailgate.org...
> > Sorry for my bad English, probably I didn't explain well what it's my
> > problem.
> > I know how to choose and put relationships in a E-R diagram
> > (I use ERWIN 4.1).
> >
> > The point is : how to set "attributes" in a relationship?
> >
> > Attributes are well defined in the theory of database design as
> > "properties" of entities and relationships.
> > In ERWIN is very easy to set attributes for entities;
> > unfortunately it seems to be not so easy (perhaps impossible at all)
> > for relationships.
>
> Despite it's name, ERWin does not do ER models (not necessarily a bad
thing
> IMO).

>


> It does


>     Integration DEFinition for Information Modeling (IDEF1X) notation

> and

>     Information Engineering (IE) notation

>
>

>

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