Concurrency Control for Multilevel Secure Databases

10.6633/IJNS.200907.9(1).10

Navdeep Kaur；Rajwinder Singh；Manoj Misra；A. K. Sarje

Multilevel security ； database system ； concurrency control ； covert channel

International Journal of Network Security

9卷1期（2009 / 07 / 01）

70 - 81

英文

A multilevel secure (MLS) database is intended to protect classified information from unauthorized users based on the classification of the data and the clearances of the users. The concurrency control requirements for transaction processing in multilevel secure database management systems (MLS/DBMSs) are different from those in conventional transaction processing systems. In MLS/DBMSs, coordination of transactions at different security levels is needed to avoid both covert channels and the starvation of high security level transactions. In this paper we outline the transaction processing requirements in MLS/DBMSs, and survey the mechanisms proposed to address these requirements and propose a new secure multiversion concurrency control protocol. We also investigate the relative performance of existing secure concurrency control protocols while varying workloads.

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