Efficient Filtering of XML Documents for Selective Dissemination of Information
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
Stream processing of XPath queries with predicates
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Path sharing and predicate evaluation for high-performance XML filtering
ACM Transactions on Database Systems (TODS)
Secure XML querying with security views
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Navigational XPath: calculus and algebra
ACM SIGMOD Record
A general approach to securely querying XML
Computer Standards & Interfaces
Recursion in XQuery: put your distributivity safety belt on
Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology
Information disclosure by answers to XPath queries
Journal of Computer Security - Selected papers from the Third and Fourth Secure Data Management (SDM) workshops
DBPL '09 Proceedings of the 12th International Symposium on Database Programming Languages
Query rewriting algorithm evaluation for XML security views
SDM'07 Proceedings of the 4th VLDB conference on Secure data management
Cloaking data to ease view creation, query expression, and query execution
Conceptual Modelling and Its Theoretical Foundations
SVMAX: a system for secure and valid manipulation of XML data
Proceedings of the 17th International Database Engineering & Applications Symposium
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XML views have been widely used to enforce access control, support data integration, and speed up query answering. In many applications, e.g., XML security enforcement, it is prohibitively expensive to materialize and maintain a large number of views. Therefore, views are necessarily virtual. An immediate question then is how to answer queries on XML virtual views. A common approach is to rewrite a query on the view to an equivalent one on the underlying document, and evaluate the rewritten query. This is the approach used in the Secure MOdular Query Engine (SMOQE). The demo presents SMOQE, the first system to provide efficient support for answering queries over virtual and possibly recursively defined XML views. We demonstrate a set of novel techniques for the specification of views, the rewriting, evaluation and optimization of XML queries. Moreover, we provide insights into the internals of the engine by a set of visual tools.