Algorithms for Maintaining
نویسندگان
چکیده
We present algorithms for access rights control in multiuser, object-oriented databases. These algorithms follow the model of authorization introduced in 6]. We show how the three basic operations: AccessControl, Grant, and Revoke can be eeciently implemented using techniques for manipulating partially ordered sets. Several techniques for maintenance of authorization bases are presented and the complexity of the algorithms is established.
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تاریخ انتشار 2006