Rewriting queries using views in description logics
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Flexible support for multiple access control policies
ACM Transactions on Database Systems (TODS)
Sesame: A Generic Architecture for Storing and Querying RDF and RDF Schema
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
Answering queries using views: A survey
The VLDB Journal — The International Journal on Very Large Data Bases
A Logical Framework for Reasoning on Data Access Control Policies
CSFW '99 Proceedings of the 12th IEEE workshop on Computer Security Foundations
Concept-level access control for the Semantic Web
Proceedings of the 2003 ACM workshop on XML security
Extending query rewriting techniques for fine-grained access control
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Policy-based dissemination of partial web-ontologies
Proceedings of the 2005 workshop on Secure web services
Secure resource description framework: an access control model
Proceedings of the eleventh ACM symposium on Access control models and technologies
Answering tree pattern queries using views
VLDB '06 Proceedings of the 32nd international conference on Very large data bases
Privacy in the Semantic Web: What Policy Languages Have to Offer
POLICY '07 Proceedings of the Eighth IEEE International Workshop on Policies for Distributed Systems and Networks
Distributed access control: a privacy-conscious approach
Proceedings of the 12th ACM symposium on Access control models and technologies
Access Control Model Based on RDB Security Policy for OWL Ontology
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part II
Enabling advanced and context-dependent access control in RDF stores
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
Semantic web policies – a discussion of requirements and research issues
ESWC'06 Proceedings of the 3rd European conference on The Semantic Web: research and applications
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Semantic Web technologies allow on-line resources to be semantically annotated to support more effective and intelligent online services. However, ontologies sometimes may contain sensitive information. Providing access to them requires proper control to ensure the data protection requirement. Yet, the protection should not be too restrictive to make the access management inflexible. While there has been recent work on policy-based access control, in this paper, the authors present a policy representation specifically for access control on ontology-based data and explain how issues like policy propagation and policy conflict resolution are addressed. The authors present bucket-based query rewriting algorithms for realizing the access control policies to avoid sensitive resources leakage in the context of the Semantic Web. The authors validate the correctness of the proposed mechanisms by going through some illustrative examples in detail.