Re: OWL modeling of E-R pattern

Yes, of course. Here is the fragment of the model I am working with. I would
really appreciate help with this.
http://www.masfak.ni.ac.rs/ontologies/2010/9/er-test.owl

On 24 November 2010 16:21, Bijan Parsia <bparsia@cs.man.ac.uk> wrote:

>  On 24 Nov 2010, at 15:08, Milan Zdravkovic wrote:
>
> > As a part of a small project, I need to perform a semantic analysis of
> the ER model (relational database). However, I am stucked with a problem of
> inferring the intermediary tables (ones that are used only to connect two
> other tables with many-to-many relation). Relevant relations are:
> >
> > entity hasAttribute attribute
> > relation hasSourceAttribute attribute
> > relation hasDestinationAttribute attribute
> >
> > Now, I assume that intermediary table is the table whose all fields are
> source attributes of some relation, or..
> >
> > entity and hasAttribute only (isSourceAttributeOf some relation)
> >
> > However, this does not work. Could you please help ?
>
> Why not? Did you make isSourceAttributeOf an inverse of hasSoruceAttribute?
>
> Cheers,
> Bijan.
>
>


-- 
Milan Zdravkovic,

Research and teaching assistant

Faculty of Mechanical Engineering, University of Nis

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