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Re: Question about MARCXML to Models transformation

From: Thomas Baker <tbaker@tbaker.de>
Date: Fri, 4 Mar 2011 09:10:32 -0500
To: "gordon@gordondunsire.com" <gordon@gordondunsire.com>
Cc: public-lld@w3.org
Message-ID: <20110304141032.GA3500@octavius>
Gordon,

On Tue, Mar 01, 2011 at 01:53:48PM +0000, Gordon Dunsire wrote:
> However, you need to think about the implications of using the FRBRer, FRAD and
> FRSAD models. They have strong ontological constraints; for example, an instance
> of the class frbrer:Expression requires the existence of an instance of the
> class frbrer:Work (but not vice-versa). IFLA will publish an OWL ontology for
> FRBR later this month (March 2011).

A point of clarification...  Do you mean that given an instance
of the class frbrer:Expression, one has license to _infer_
the (theoretical) existence of an instance of the class
frbrer:Work -- even if that instance has not actually been
explicitly declared?

Or does the model somehow require that for every instance of
Expression, an instance of Work must be explicitly declared?

Tom

-- 
Tom Baker <tbaker@tbaker.de>
Received on Friday, 4 March 2011 14:11:12 GMT

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