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Wireless Networks, 2016 In mobile ad hoc network, the existing replication technique and multiversion scheme increase the cost of overhead. In addition, there is possibility of mobility- and energy-related issues. In order to overcome these issues, in this paper, we propose a hierarchical replication and multiversion concurrency control model for mobile database systems.
M. Mohana, C. Jaykumar
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RF-MVTC: an efficient risk-free multiversion concurrency control algorithm
Concurrency and Computation: Practice and Experience, 2004 AbstractIn this paper, we focus on the temporary return of data values that are incorrect for given transactional semantics that could have catastrophic effects similar to those in parallel and discrete event simulation systems. In many applications using online transactions processing environments, for instance, it is best to delay the response to a ...
Azzedine Boukerche, Terry Tuck
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, 1986 A new multiversion concurrency control scheme for a distributed database system is proposed in this paper. Each data object in our database model has two copies allocated in different sites in the system. Unlike the usual distributed database systems with redundant copies, these two copies are not concurrently updated, but only one is updated for a ...
Shojiro Muro +2 more
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Multiversion Concurrency Control on Intermittent Systems
2019 IEEE/ACM International Conference on Computer-Aided Design (ICCAD), 2019Concurrency control allows multiple tasks that share data objects to be concurrently executed in a serializable order, thus significantly improving computation progress. However, to accumulate forward progress on energy-harvesting intermittent systems while achieving data consistency across power cycles, existing approaches based on the checkpointing ...
Yi-Ting Chen +3 more
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Multiversion cautious schedulers for database concurrency control
IEEE Transactions on Software Engineering, 1990Let MC stand for a class of logs (i.e. sequences of read/write steps of transactions) that are serializable when multiple versions of the data items are maintained. The multiversion cautious scheduler, MCS(MC) which is introduced, outputs a sequence belonging to MC by reordering, if necessary, the incoming sequence of requests from transactions and it ...
Tiko Kameda +2 more
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Starvation-free secure multiversion concurrency control
Information Processing Letters, 1998Concurrency control is important for multilevel secure databases because a covert channel can be easily created through collaboration of multilevel transactions in most traditional concurrency control mechanisms. We, in this paper, propose a secure multiversion concurrency control mechanism.
Kim, HT, Kim, MH Kim, Myoung Ho
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Concurrency control and recovery for multiversion database structures
Proceedings of the 2nd PhD workshop on Information and knowledge management, 2008In modern database applications access to historical versions of the dataset is becoming increasingly important. Several multiversion structures with corresponding concurrency-control and recovery algorithms exist, but none of these have optimal logarithmic execution times for all actions in all situations. The time-split B+tree by Lomet et al.
Seppo Sippu +3 more
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A transaction model and multiversion concurrency control for mobile database systems [PDF]
Distributed and Parallel Databases, 2007 Transaction management on Mobile Database Systems (MDS) has to cope with a number of constraints such as limited bandwidth, low processing power, unreliable communication, and mobility etc. As a result of these constraints, traditional concurrency control mechanisms are unable to manage transactional activities to maintain availability.
Sourav S. Bhowmick +3 more
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On-line multiversion database concurrency control
Acta Informatica, 1992This paper presents a new model for studying the concurrency vs. computation time tradeoffs involved in on-line multiversion database concur- rency control. The basic problem that is studied in our model is the following: Given: a current database system state which includes information such as which transaction previously read a version from which ...
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