mkroetzsch added a comment. Note that all current data representation formats assume that "0000-01-01T00:00:00" is a valid representation:
- XML Schema 1.1: http://www.w3.org/TR/xmlschema11-2/#dateTime - RDF 1.1: http://www.w3.org/TR/rdf11-concepts/#section-Datatypes - OWL 2: http://www.w3.org/TR/owl2-syntax/#Datatype_Maps Moreover, XML Schema 1.1 argues that this change was made "in order to agree with existing usage", and I would agree there: many existing documents used the ISO interpretation of years even before it became official. In other words, if we want to export data to RDF, we should definitely conform with current usage and standards. I imagine that it would be easy for BlazeGraph to use either semantics if we asked for support there. Regarding the intention of SPARQL 1.1, I now have sent an enquiry to the former SPARQL WG: http://lists.w3.org/Archives/Public/public-sparql-dev/2015JanMar/0031.html which will hopefully lead to further clarification on this matter. TASK DETAIL https://phabricator.wikimedia.org/T94064 REPLY HANDLER ACTIONS Reply to comment or attach files, or !close, !claim, !unsubscribe or !assign <username>. EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Smalyshev, mkroetzsch Cc: Denny, Manybubbles, daniel, mkroetzsch, Smalyshev, JanZerebecki, Aklapper, jkroll, Wikidata-bugs, Jdouglas, aude, GWicke _______________________________________________ Wikidata-bugs mailing list Wikidata-bugs@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata-bugs
