Using P1921 will not always work. Especially in the case where resources
use opaque identifiers either as internal identifiers and/or IRI's, making
the transformation between the two impossible.
Also having to rely on P1921 to run for example federated queries leads to
complex query patterns. You always have to include an additional step where
the IRIs are calculated on the fly.
On Thu, May 18, 2017 at 12:51 AM, Andy Mabbett <andy(a)pigsonthewing.org.uk>
wrote:
On 17 May 2017 at 20:20, Andra Waagmeester
<andra(a)micelio.be> wrote:
On Wed, May 17, 2017 at 5:52 PM, Andy Mabbett <andy(a)pigsonthewing.org.uk
wrote:
>
> On 17 May 2017 at 16:28, Andra Waagmeester <andra(a)micelio.be> wrote:
>
> > Just to add to Egon's comment IRI's can also be added to Wikidata
using
the
Property P2888 - Exact Match.
I wouldn't advise doing this when we already have the ID in a specific
property.
The ID usually points to human readable website, whereas in RDF the items
use IRI to distinguish between concepts. An IRI points to the related
node
in the linked data cloud. In the context of
being able to link with
external (RDF) datasets, using the ID from a specific property does not
work.
That's what we have P1921 for.
--
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk
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