Semantic Analysis of R2RML Mappings for Ontology-Based Data Access

Ontology-based data access (OBDA) deals with the problem of accessing autonomous data sources through a shared, virtual ontology, and declarative mappings connecting the data sources to the ontology. The W3C standard R2RML allows for mapping relational data sources to RDFS/OWL ontologies. In this pa...

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Bibliographic Details
Published inWeb Reasoning and Rule Systems Vol. 9898; pp. 25 - 38
Main Authors Civili, Cristina, Mora, Jose, Rosati, Riccardo, Ruzzi, Marco, Santarelli, Valerio
Format Book Chapter
LanguageEnglish
Published Switzerland Springer International Publishing AG 2016
Springer International Publishing
SeriesLecture Notes in Computer Science
Subjects
Conjunctive Query
Ground Atom
Information retrieval
Integrity Constraint
Optique Project
Source Schema
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Summary:Ontology-based data access (OBDA) deals with the problem of accessing autonomous data sources through a shared, virtual ontology, and declarative mappings connecting the data sources to the ontology. The W3C standard R2RML allows for mapping relational data sources to RDFS/OWL ontologies. In this paper, we present algorithms for the semantic analysis of R2RML mappings in the OBDA setting, when the ontology is expressed in OWL 2 QL. The focus of such algorithms is to identify the main semantical anomalies (inconsistency and redundancy) of a mapping specification with respect to the ontology and/or the data sources. Such algorithms have been implemented in the mapping analysis tool developed within the Optique European project. We also report on the experiments conducted within the Optique project use cases.
ISBN:9783319452753
3319452754
ISSN:0302-9743
1611-3349
DOI:10.1007/978-3-319-45276-0_3