- From: Jerven Bolleman <me@jerven.eu>
- Date: Mon, 10 Feb 2014 15:43:00 +0100
- To: Heiko Paulheim <heiko@informatik.uni-mannheim.de>
- Cc: semantic-web@w3.org, "public-lod@w3.org community" <public-lod@w3.org>, Bernd Opitz <opitz.bernd@gmail.com>
Hi Heiko, http://www.w3.org/TR/xmlschema-2/#gYear and http://www.w3.org/TR/xmlschema-2/#gYeargYearMonth are the datatypes that you should use. Regards, Jerven On 10 Feb 2014, at 15:37, Heiko Paulheim <heiko@informatik.uni-mannheim.de> wrote: > Hi all, > > xsd:dateTime and xsd:date are used frequently for encoding dates in RDF, e.g., for birthdays in the vcard ontology [1]. Is there any best practice to encode incomplete date information, e.g., if only the birth *year* of a person is known? > > As far as I can see, the XSD spec enforces the provision of all date components [2], but "1997-01-01" seems like a semantically wrong way of expressing that someone is born in 1997, but the author does not know exactly when. > > Thanks, > Heiko > > [1] http://www.w3.org/2006/vcard/ns > [2] http://www.w3.org/TR/xmlschema-2/#dateTime > [3] http://www.w3.org/TR/xmlschema-2/#date > > -- > Dr. Heiko Paulheim > Research Group Data and Web Science > University of Mannheim > Phone: +49 621 181 2646 > B6, 26, Room C1.08 > D-68159 Mannheim > > Mail: heiko@informatik.uni-mannheim.de > Web: www.heikopaulheim.com > >
Received on Monday, 10 February 2014 14:43:36 UTC