Re: what exactly is the conceptual model?

On 3 jul, 00:24, Bob Badour <bbad..._at_pei.sympatico.ca> wrote:
> Senges wrote:
> > hi list,
>
> > i know about the basic distiction of data modelling as i heard it in
> > my db couse:
>
> > * semantic model --> ERM
> > * logical model --> relational schema / XML schema
> > * physical model --> hash tables / how to handle stuff on the
> > harddisk
>
> > and i heard about the conceptual modell / conceptual schema /
> > conceptual modelling. however:
>
> > * sometimes the semantic modell is explaint to be a conceptual modell,
> > or .. conceptualization leeds to a semantic modell.
> > * sometimes the logical modell is explaint to be a coceptual one (this
> > way we learned it in our course).
>
> > Now i'm writing about ontologies defined as, "a specification of an
> > explicit conceptualization".
> > Would you think this "conceptualization" refers to the semantic oder
> > the logical model?
>
> > thanx for any help,
> > chris
>
> Hi Chris,
>
> If you use conceptual model as a synonym for semantic model, I think you
> will translate your teachings into normal usage well enough. However,
> while ERM is certainly popular, I think better conceptual modelling
> methods exist.-

Bob, chris,

as a conceptual model I always look at NIAM based solutions like ORM or FCO-IM. These methodologies represent information based on vebralization, i.e. what is expressable(in the UoD) can be moddeled.

DM Unseen. Received on Tue Jul 03 2007 - 09:27:49 CEST