Controlling Access to XML Documents over XML Native and Relational Databases

Authors:
Lazaros Koromilas;George Chinis;Irini Fundulaki;Sotiris Ioannidis
Affiliations:
FORTH-ICS, Greece;FORTH-ICS, Greece;FORTH-ICS, Greece;FORTH-ICS, Greece
Venue:
SDM '09 Proceedings of the 6th VLDB Workshop on Secure Data Management
Year:
2009

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Abstract

In this paper we investigate the feasibility and efficiency of mapping XML data and access control policies onto relational and native XML databases for storage and querying. We developed a re-annotation algorithm that computes the XPath query which designates the XML nodes to be re-annotated when an update operation occurs. The algorithm uses XPath static analysis and our experimental results show that our re-annotation solution is on the average 7 times faster than annotating the entire document.