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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 ...
T. Ibaraki, T. Kameda, N. Katoh
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Euromicro Conference on Real-Time Systems, 2006 Open Journal of Physical Science (ISSN: 2734-2123)
Concurrency control and recovery mechanisms are essential for ensuring reliability and consistency in distributed database systems (DDBS). This systematic review examines recent advances between 2020 and 2025, focusing on trends, techniques, and ...
M. Okoronkwo +4 more
semanticscholar +1 more source
Concurrency control and recovery mechanisms are essential for ensuring reliability and consistency in distributed database systems (DDBS). This systematic review examines recent advances between 2020 and 2025, focusing on trends, techniques, and ...
M. Okoronkwo +4 more
semanticscholar +1 more source
Effective optimistic concurrency control in multiversion object bases
1994The use of versioned data has proven its value in many areas of Computer Science including concurrency control. In this paper we examine the use of versioned objects in object bases for the purpose of enhancing concurrency. We provide a framework for discussing multi-version objects which includes fundamental definitions, the abstraction of objects as ...
Peter Graham, Ken Barker
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A MULTIVERSION OPTIMISTIC CONCURRENCY CONTROL PROTOCOL IN MOBILE BROADCAST ENVIRONMENTS
International Journal of Computers and Applications, 2010AbstractThis paper presents MVOCC-MDA-2PV (multiversion optimistic concurrency control with multiversion dynamic adjustment using two-phase validation) protocol for processing mobile real-time transaction in mobile broadcast environments. Transaction validation is performed at two phases: pre-validation and final validation.
L. Xiangdong +3 more
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Distributed Multiversion Optimistic Concurrency Control for Mobile Real-Time Database Systems
2007 International Conference on Wireless Communications, Networking and Mobile Computing, 2007In this paper, DMVOCC-MDA-2PLV protocol is proposed for processing mobile distributed real-time transaction in mobile broadcast environments. The new protocol can eliminate conflicts between mobile read-only and mobile update transactions, and resolve data conflicts flexibly using multiversion dynamic adjustment of serialization order to avoid ...
Xiangdong Lei +3 more
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A real-time concurrency control algorithm: Use of multiversion and precedence relationships
Journal of Systems Architecture, 1997Abstract This paper proposes a multiversion concurrency control algorithm for real-time databases. Based on a priority cognitive algorithm commonly used in real-time processing, the algorithm resolves data conflicts among conflicting transactions in favor of the urgent transactions, i.e., those with higher priority.
Seok Hee Hong, Myoung Ho Kim
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Cervical cancer prevention and control in women living with human immunodeficiency virus
Ca-A Cancer Journal for Clinicians, 2021Philip E Castle, Vikrant V Sahasrabuddhe
exaly