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: [email protected]
Web: www.heikopaulheim.com
