Concurrency control performance modeling: alternatives and implications
ACM Transactions on Database Systems (TODS)
Using delayed commitment in locking protocols for real-time databases
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
Scheduling real-time transactions: a performance evaluation
ACM Transactions on Database Systems (TODS)
Data access scheduling in firm real-time database systems
Real-Time Systems - Special issue: real-time databases
Concurrency control in trusted database management systems: a survey
ACM SIGMOD Record
Integrating standard transactions in firm real-time database systems
Information Systems - Special issue on real-time database systems
An adaptive policy for improved timeliness in secure database systems
Proceedings of the ninth annual IFIP TC11 WG11.3 working conference on Database security IX : status and prospects: status and prospects
A secure concurrency control protocol for real-time databases
Proceedings of the ninth annual IFIP TC11 WG11.3 working conference on Database security IX : status and prospects: status and prospects
The notions of consistency and predicate locks in a database system
Communications of the ACM
A note on the confinement problem
Communications of the ACM
Improving timeliness in real-time secure database systems
ACM SIGMOD Record
Supporting security requirements in multilevel real-time databases
SP '95 Proceedings of the 1995 IEEE Symposium on Security and Privacy
Design of concurrency controls for transaction processing systems
Design of concurrency controls for transaction processing systems
Issues in security for real-time databases
ACM-SE 36 Proceedings of the 36th annual Southeast regional conference
Maintaining security and timeliness in real-time database system
Journal of Systems and Software
Integrating Security and Real-Time Requirements Using Covert Channel Capacity
IEEE Transactions on Knowledge and Data Engineering
Multiversion Locking Protocol with Freezing for Secure Real-Time Database Systems
IEEE Transactions on Knowledge and Data Engineering
Secure Buffering in Firm Real-Time Database Systems
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Shell's Trust Domain Infrastructure Security Certification
Proceedings of the IFIP TC11 WG11.4 First Annual Working Conference on Network Security: Advances in Network and Distributed Systems Security
Secure buffering in firm real-time database systems
The VLDB Journal — The International Journal on Very Large Data Bases
The freeze algorithms for concurrency control in secure real-time database systems
Data & Knowledge Engineering
The semantics of an extended referential integrity for a multilevel secure relational data model
Data & Knowledge Engineering
Scheduling Security-Critical Real-Time Applications on Clusters
IEEE Transactions on Computers
Improving security for periodic tasks in embedded systems through scheduling
ACM Transactions on Embedded Computing Systems (TECS)
ISPA'05 Proceedings of the Third international conference on Parallel and Distributed Processing and Applications
Enhancing security of real-time applications on grids through dynamic scheduling
JSSPP'05 Proceedings of the 11th international conference on Job Scheduling Strategies for Parallel Processing
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Many real-time database applications arise in safety-critical installations and military systems where enforcing security is crucial to the success of the enterprise. A secure real-time database system has to simultaneously satisfy who requirements guarantee data security and minimize the number of missed transaction deadlines. We investigate here the performance implications, in terms of missed deadlines, of guaranteeing security in a real-time database system. In particular, we focus on the concurrency control aspects of this issue.Our main contributions are the following: First, we identify which among the previously proposed real-time concurrency control protocols are capable of providing protection against both direct and indirect (covert channels) means of unauthorized access to data. Second, using a detailed simulation model of a firm-deadline real-time database system, we profile the real-time performance of a representative set of these secure concurrency control protocols. Our experiments show that a prioritized optimistic concurrency control protocol. OPT-WAIT, provides the best overall performance. Third, we propose and evaluate a novel dual approach to secure transaction concurrency control that allows the real-time database system to simultaneously use different concurrency control mechanisms for guaranteeing security and for improving real-time performance. By appropriately choosing these different mechanisms, we have been able to design hybrid concurrency control algorithms that provide even better performance than OPT-WAIT.