CODEWITHSUNDEEP
datetimerdfsparqln3
mcandre
mcandre

Reputation: 24662

How would RDF, N3, 3stores, and SPARQL handle an additional timestamp field?

I want to build a queryable RDF database of events of the form:

:Bob :played :musiccd :at "00:00:00 UTC on 1 January 1970"

Is this possible with RDF/N3/3store/SPARQL?

Does SPARQL know how to compare datetimes and test for membership in datetime ranges? If not, how easy is it to extend SPARQL to do so for a given datetime format?

Upvotes: 1

Views: 1389

Answers (2)

boferri
boferri

Reputation: 696

(Since I cannot comment right now. I'll post this as reply.)

@mcandre: please have a look at the Play Back Ontology and the Counter Ontology for modelling your intended use case

Upvotes: 2

RobV
RobV

Reputation: 28655

SPARQL supports the xsd:dateTime natively, many stores will also handles xsd:date and xsd:time as well

If you use a SPARQL 1.1 compliant engine then there are also a bunch of new functions that will let you extract specific sections of dates and times.

Therefore you should be able to write SPARQL queries appropriate to your data

For help with modeling time in RDF and how that affects the formulation of your SPARQL queries see Ian Davis's blog post series on the topic

Upvotes: 3

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