Distributed databases principles and systems
Distributed databases principles and systems
Concurrency control and recovery in database systems
Concurrency control and recovery in database systems
Conflict detection tradeoffs for replicated data
ACM Transactions on Database Systems (TODS)
Orange locking: channel-free database concurrency control via locking
Results of the Sixth Working Conference of IFIP Working Group 11.3 on Database Security on Database security, VI : status and prospects: status and prospects
Fine-grained sharing in a page server OODBMS
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
Two-phase commit optimizations in a commercial distributed environment
Distributed and Parallel Databases
Multilevel secure transaction processing: status and prospects
Proceedings of the tenth annual IFIP TC11/WG11.3 international conference on Database security: volume X : status and prospects: status and prospects
Starvation-free secure multiversion concurrency control
Information Processing Letters
IEEE Transactions on Knowledge and Data Engineering
IEEE Transactions on Knowledge and Data Engineering
ASEP: A Secure and Flexible Commit Protocol for MLS Distributed Database Systems
IEEE Transactions on Knowledge and Data Engineering
Database Concurrency Control in Multilevel Secure Database Management Systems
IEEE Transactions on Knowledge and Data Engineering
ITCC '05 Proceedings of the International Conference on Information Technology: Coding and Computing (ITCC'05) - Volume I - Volume 01
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Majority of the research in multilevel secure database management systems (MLS/DBMS) focuses primarily on centralized database systems. However, with the demand for higher performance and higher availability, database systems have moved from centralized to distributed architectures, and the research in multilevel secure distributed database management systems (MLS/DDBMS) is gaining more and more prominence. Traditional transaction management protocols (i.e., concurrency control and commit protocols) are important components of database systems. The most important issues for these protocols in MLS database systemare the covert channel problem[2] and starvation of high security level transactions [10]. To address these problems, first we propose new correctness criteria for multilevel secure multiversion concurrency control protocol, called read-down conflict serializability. It is the extended definition of one-copy serial (or1-serial) that allows a transaction to read older versions, if necessary. If a concurrency control protocol allows transaction to read older versions, we can obtain better throughput and response time than the traditional multiversion concurrency control protocols. We show that multiversion schedule based upon proposed criteria is also one-copy serializable. Secondly, this paper proposes a secure multiversion concurrency control protocol for MLS/DDBMSs that is only free from covert channels but also do so without starving high security level transactions, in addition to ensure the proposed serializability. Further, in distributed database systems, an atomic commitment protocol is needed to terminate distributed transactions consistently. To meet MLS requirements and to avoid database inconsistencies 2PC commit protocol is also modified.