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Re: DCAT Last Call issues: additional rules for skos:Concept

From: Richard Cyganiak <richard@cyganiak.de>
Date: Mon, 25 Mar 2013 17:54:59 +0000
Cc: "Public GLD WG" <public-gld-wg@w3.org>
Message-Id: <36D3FB28-7767-489B-8B02-9F8CD830C886@cyganiak.de>
To: "Makx Dekkers" <makx@makxdekkers.com>
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.


> Makx.
> Makx Dekkers
> makx@makxdekkers.com
> +34 639 26 11 46
Received on Monday, 25 March 2013 17:55:20 UTC

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