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Appendix D: Design
and Implementation
of a Database
Inference Controller
D.1 Overview
is book has focused on secure data provenance and inference control with
Semantic Web technologies. We have used the reasoning power of the Semantic
Web technologies to deduce whether there are security violations through infer-
ence. Our approach utilized SPARQL query modification. It has origins in query
modification in multilevel relational database systems. In this appendix we discuss
the early approaches based on query modification to handle the inference problem.
ese early approaches carry out query modification based on security policies,
often cal