The Community for Technology Leaders
Green Image
Issue No. 03 - March (1989 vol. 22)
ISSN: 0018-9162
pp: 63,64,65,66,67,68,69,70
Strategies for secure query processing multilevel-security database management systems are proposed. They are carried out by query modification, a technique that has been used for enforcing integrity constraints and providing view mechanisms. The technique consists of replacing the query the user presents with one that, when evaluated, will perform the desired function. In the case of a view mechanism, the names of views referenced in the query are replaced by the definitions of the views in terms of base relations. The basic strategy and two variants-adding environmental information and using graphs-are described. The performance of the strategies is examined.<>
security of data, database management systems, information retrieval, performance, secure query processing multilevel-security database management systems, query modification, integrity constraints, view mechanisms, names, definitions, base relations, environmental information, graphs, Multilevel systems, Deductive databases, Access control, Data security, Authorization, Database systems, Relational databases, Proposals, Performance evaluation, Query processing

"Secure query-processing strategies," in Computer, vol. 22, no. , pp. 63,64,65,66,67,68,69,70, 1989.
88 ms
(Ver 3.3 (11022016))