Formalisation and experiences of R2RML-based SPARQL to SQL query translation using Morph

Priyatna, Freddy and Corcho, Oscar and Sequeda, Juan F. (2014). Formalisation and experiences of R2RML-based SPARQL to SQL query translation using Morph. In: "23rd International World Wide Web Conference, WWW '14", 07-11 Apr 2014, Seul, Corea. ISBN 978-1-4503-2744-2. pp. 479-490.

Description

Title: Formalisation and experiences of R2RML-based SPARQL to SQL query translation using Morph
Author/s:
  • Priyatna, Freddy
  • Corcho, Oscar
  • Sequeda, Juan F.
Item Type: Presentation at Congress or Conference (Article)
Event Title: 23rd International World Wide Web Conference, WWW '14
Event Dates: 07-11 Apr 2014
Event Location: Seul, Corea
Title of Book: WWW '14: Proceedings of the 23rd International Conference on World Wide Web
Date: 2014
ISBN: 978-1-4503-2744-2
Volume: 1
Subjects:
Faculty: E.T.S. de Ingenieros Informáticos (UPM)
Department: Inteligencia Artificial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

R2RML is used to specify transformations of data available in relational databases into materialised or virtual RDF datasets. SPARQL queries evaluated against virtual datasets are translated into SQL queries according to the R2RML mappings, so that they can be evaluated over the underlying relational database engines. In this paper we describe an extension of a well-known algorithm for SPARQL to SQL translation, originally formalised for RDBMS-backed triple stores, that takes into account R2RML mappings. We present the result of our implementation using queries from a synthetic benchmark and from three real use cases, and show that SPARQL queries can be in general evaluated as fast as the SQL queries that would have been generated by SQL experts if no R2RML mappings had been used.

More information

Item ID: 36819
DC Identifier: http://oa.upm.es/36819/
OAI Identifier: oai:oa.upm.es:36819
Official URL: http://wwwconference.org/proceedings/www2014/starthere.htm
Deposited by: Memoria Investigacion
Deposited on: 11 Feb 2016 14:27
Last Modified: 15 Nov 2017 16:17
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