W3C home > Mailing lists > Public > public-owl-dev@w3.org > October to December 2010

Re: OWL modeling of E-R pattern

From: Bijan Parsia <bparsia@cs.man.ac.uk>
Date: Wed, 24 Nov 2010 15:21:50 +0000
Cc: public-owl-dev@w3.org
Message-Id: <23DAB3AE-F260-474D-BD45-65E8EF98F758@cs.man.ac.uk>
To: Milan Zdravkovic <milan.zdravkovic@gmail.com>
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.
Received on Wednesday, 24 November 2010 15:22:10 GMT

This archive was generated by hypermail 2.3.1 : Wednesday, 27 March 2013 09:32:58 GMT