SPARQL-RW: transparent query access over mapped RDF data sources

Authors:
Konstantinos Makris;Nikos Bikakis;Nektarios Gioldasis;Stavros Christodoulakis
Affiliations:
Technical University of Crete, Greece;National Technical University of Athens, Greece, and IMIS Institute, "Athena" Research Center, Greece;Technical University of Crete, Greece;Technical University of Crete, Greece
Venue:
Proceedings of the 15th International Conference on Extending Database Technology
Year:
2012

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Abstract

The Web of Data is an open environment consisting of very large, inter-linked RDF datasets from various domains (e.g., DBpedia, GeoNames, ACM, PubMed, etc.) accessed through SPARQL queries. Establishing interoperability in this environment has become a major research challenge. This paper presents Sparql--Rw (SPARQL--ReWriting), a framework which provides transparent query access over mapped RDF datasets. The Sparql--Rw provides a generic method for SPARQL query rewriting, with respect to a set of predefined mappings between ontology schemas. To this end, it supports a set of rich and flexible mapping types and it is proved to provide semantics preserving queries.