[rdfweb-dev] Re: isbn - rdf:about or IFP

Dirk-Willem van Gulik dirkx at asemantics.com
Mon Mar 15 12:00:54 UTC 2004

On 15/03/2004, at 9:38 AM, Jan Grant wrote:

> On Sat, 13 Mar 2004, Dan Brickley wrote:
>> It seems the spec is clear that re-use is an error, so ISBNs _are_ IFP
>> and data that fails to resspect that is just plain wrong.
> So if a publisher has produced two books with the same ISBN then one
> doesn't exist? Suggest for "_are_" read "_should be_" - unless there's 
> a
> handy way to get this right other than just asserting that data is
> wrong? In the past the uniqueness of ISBNs was obviously seen as
> unimportant. Maybe a disambiguation rule that uses IFP for new-style
> ISBNs (which, one might hope, will be safely assigned in the future).

And, one might hope, can easily be recognized from the old ones :(.


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