- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Mon, 25 Mar 2013 17:54:59 +0000
- To: "Makx Dekkers" <makx@makxdekkers.com>
- Cc: "Public GLD WG" <public-gld-wg@w3.org>
On 25 Mar 2013, at 16:03, "Makx Dekkers" <makx@makxdekkers.com> wrote: > I would like a clarification of the usage note at http://www.w3.org/TR/2013/WD-vocab-dcat-20130312/#class-category-and-category-scheme. > > It seems to me that DCAT, as a base specification, should keep away from declaring properties mandatory as such recommendations would depend on the requirements of a particular application. There is no mandatory property. The dcat:theme property is optional. The only requirement is that the subject of dcat:theme have an associated concept scheme. > Moreover, according to the SKOS specification “there are no conditions preventing a SKOS concept from taking part in zero, one, or more than one concept scheme” (http://www.w3.org/TR/skos-reference/#L1101) so I would think that DCAT can’t require that skos:inScheme or skos:topConceptOf is mandatory on every skos:Concept. DCAT doesn't require it of every skos:Concept. It requires it of the objects of dcat:theme only. Best, Richard > > Makx. > > > Makx Dekkers > makx@makxdekkers.com > +34 639 26 11 46 > >
Received on Monday, 25 March 2013 17:55:20 UTC