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This paper proposes an implementation model for RDF access control in Oracle, and the model is to improve usability of the RAC model, devised for secure resource management for intelligent service frameworks such as semantic Web, semantic grid, semantic GIS, and semantic sensor network. The RAC model has been devised based on the standard relational database facility, and thus it does not useful for real application. In other words, RDBMSs provide various and powerful security mechanisms, practical implementation models are required for RDBMSs. The goal of this paper is to develop an implementation model for high usability and applicability of the RAC model. This paper shows a prototype implementation and experiment.