This chapter accompanied the lecture on SPARQL with entailment
regimes given at the 7th Reasoning Web Summer School in Galway, Ireland, 2011. It first introduces the main features of SPARQL as a query language. Then, in order to define the semantics of a query, it shows how a query can be translated to an abstract query, which can then be evaluated according to SPARQL’s query evaluation mechanism. This chapter also briefly introduce the features of SPARQL 1.1, which was under development at the time of this writing.
URL: http://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.090/Publikationen/2011/Glim11a.pdf
Keywords: Description Logic, Entailment Regimes, Basic Graph Pattern (BGP), Web Ontology Language (OWL), RDF Schema, Sub-graph matching, SPARQL
Author: Glimm, Birte
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P2H
Educational use: instruction
Educational audience: generalPublic
Interactivity type: expositive
- Demonstrates a working knowledge of the forms and uses of SPARQL result sets (SELECT, CONSTRUCT, DESCRIBE, and ASK).
- Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
- Understands that a SPARQL query matches an RDF graph against a pattern of triples with fixed and variable values.
- Formulates advanced queries on data containing blank nodes.
- Uses common entailment regimes and understands their uses.