Titlebook: Secure Data Management; 4th VLDB Workshop, S Willem Jonker,Milan Petković Conference proceedings 2007 Springer-Verlag Berlin Heidelberg 200

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Refinement for Administrative Policiesformal definition of administrative refinement and we show that there is an ordering for administrative privileges which yields administrative refinements of policies. We argue (by giving an example) that this privilege ordering can be very useful in practice, and we prove that the privilege ordering is tractable.

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Answering Queries Based on Imprecision and Uncertainty Trade-Offs in Numeric Databasesprecise query answer is within any interval of size .. Developed are random disclosure algorithms that satisfy security requirement functions, and guarantee, under certain conditions, maximum data availability.

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Towards Improved Privacy Policy Coverage in Healthcare Using Policy Refinementeamlessly embed privacy controls into the clinical workflow based on the actual practices of the organization in order to improve the . of the privacy policy. PRIMA effectively enables the transition from the current state of . systems to . systems.