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Implementing controlled query evaluation in OBDA
Umeå University, Faculty of Science and Technology, Department of Computing Science.
Umeå University, Faculty of Science and Technology, Department of Computing Science. Free University of Bozen-Bolzano, Bolzano, Italy.ORCID iD: 0000-0001-5174-9693
Sapienza Università di Roma, Rome, Italy.
2024 (English)In: JOWO 2024. The Joint Ontology Workshops: Proceedings of the Joint Ontology Workshops (JOWO) - Episode X: The Tukker Zomer of Ontology, and satellite events co-located with the 14th International Conference on Formal Ontology in Information Systems (FOIS 2024), CEUR-WS , 2024, article id st4cm-1Conference paper, Published paper (Refereed)
Abstract [en]

In the Ontology Based Data Access (OBDA) framework, users access a relational data source by querying a domain ontology, whose classes and properties are connected to the data via declarative mappings. OBDA is adopted for data management in various sectors, notably healthcare, where confidentiality of information is a key concern that requires data to be properly protected from unauthorized accesses. Controlled Query Evaluation (CQE) is a framework for privacy-preserving query answering in the presence of an ontology. In CQE, policies are used to represent the information that should be kept confidential, and the aim is to devise from policy specifications suitable censors that enforce data protection. Therefore, it is desirable to integrate CQE in OBDA to obtain a robust privacy-aware data management framework. This has been done in the recently proposed Policy-Protected OBDA (PPOBDA) framework, which ensures the integration of CQE within OBDA by embedding policies into mappings. In this paper, we present an open-source solution that implements PPOBDA and a simplified algorithm for policy embedding, compared to previously proposed ones. This facilitates the adoption of PPOBDA using any OBDA query engine capable of translating SPARQL queries into SQL. In our implementation, we rely on Ontop, a state-of-the-art open-source OBDA tool.

Place, publisher, year, edition, pages
CEUR-WS , 2024. article id st4cm-1
Series
CEUR workshop proceedings, ISSN 1613-0073 ; 3882
Keywords [en]
Controlled Query Evaluation, Ontology Based Data Access, Ontop, Policy-Protected OBDA, Privacy
National Category
Computer Sciences Computer Systems
Identifiers
URN: urn:nbn:se:umu:diva-234314Scopus ID: 2-s2.0-85214567303OAI: oai:DiVA.org:umu-234314DiVA, id: diva2:1930449
Conference
2024 Joint Ontology Workshops (JOWO) - Episode X: The Tukker Zomer of Ontology, and satellite events co-located with the 14th International Conference on Formal Ontology in Information Systems (FOIS 2024), Enschede, The Netherlands, July 15-19, 2024
Funder
Wallenberg AI, Autonomous Systems and Software Program (WASP)German Research Foundation (DFG)Available from: 2025-01-23 Created: 2025-01-23 Last updated: 2025-01-23Bibliographically approved

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Baura, DivyaCalvanese, Diego

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CiteExportLink to record
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Citation style
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