W3C home > Mailing lists > Public > public-dxwg-wg@w3.org > June 2018

Re: [dxwg] Incorrect type for *URL properties - should be owl:DatatypeProperty with range xsd:anyURI

From: Alejandra Gonzalez-Beltran via GitHub <sysbot+gh@w3.org>
Date: Tue, 12 Jun 2018 21:47:30 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-396745416-1528840049-sysbot+gh@w3.org>
I agree that the labels for the properties dcat:*URL and their descriptions would imply that their range should be ```xsd:anyURI``` making them ```owl:DatatypeProperty``` instead of ```owl:ObjectProperty```.

However, I agree with @andrea-perego that we shouldn't break current implementations. We could move outside of OWL DL and support properties with the two types, but I don't think we should do that and add more complexity. 

If the problem is the usage note, I suggest we change it to make clear that we expect the value to be an individual. 

To find examples, I've been exploring the [European Data Portal SPARQL endpoint](https://www.europeandataportal.eu/sparql-manager/en/). As @dr-shorthair mentioned, the current use is e.g. : 
```<http://europeandataportal.eu/set/distribution/dfdb9314-3695-45b5-b6e3-982c38a3f7aa> dcat:downloadURL <https://www.milieuinfo.be/dms/d/d/workspace/SpacesStore/480e10df-9020-41ce-ac38-c41bd98b5851/22.2.1%20Oostakker%20Slotendries.zip> ; ``` 

I could not find examples of 'cross-linking of related resources (as services and distributions)' (especially because the endpoint actually hangs with more complex queries). @andrea-perego maybe you can point us to examples of that?

-- 
GitHub Notification of comment by agbeltran
Please view or discuss this issue at https://github.com/w3c/dxwg/issues/249#issuecomment-396745416 using your GitHub account
Received on Tuesday, 12 June 2018 21:47:34 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 30 October 2019 00:15:43 UTC