Results 51 to 60 of about 239,255 (120)
Effective Correctness Criteria for Serializability in Multiversion Concurrency Control Technique
Sonal Kanungo, R. D. Morena
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Optimizing Active Database Transactions Using an Extended Multiversion Concurrency Control Protocol
Projet ...
Tombroff, Dimitri+2 more
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Multiversion Concurrency Control with the Precedence Graph Generation Algorithm
Prateek Vikram+2 more
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Multiversion concurrency control in objectbased systems
Current approaches to enhancing concurrency in database systems have focused on developing new transaction models that typically demand changes to either the atomicity, consistency, or isolation properties of the transactions themselves. Indeed much of this work has been insightful but most of these attempts suffer from being either computationally ...
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Multiversion concurrency control for multilevel secure database systems
Consideration is given to the application of multiversion schedulers in multilevel secure database management systems (MLS/DBMSs). Transactions are vital for MLS/DBMSs because they provide transparency to concurrency and failure. Concurrent execution of transactions may lead to contention among subjects for access to data, which in MLS/DBMSs may lead ...
T.F. Keefe, W.T. Tsai
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An Evaluation of Multiversion Concurrency Control forWeb Service Directories
Web service directories are shared resources that have to accommodate a high number of concurrent read requests, whereas updates are relatively infrequent. To allow for the automatic composition of complex web services based on those contained in a directory, read requests may involve a series of queries which require a consistent view of the data.
Walter Binder+3 more
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Performance of multiversion concurrency control algorithms in maintaining temporal consistency
The authors present a model of typical hard real-time applications and the concepts of age and dispersion of data accessed by the real-time transactions. These are used to evaluate the performance of a class of multiversion lock-based concurrency control algorithms in maintaining temporal consistency of data in a real-time shared-data environment.
Xiaoyu Song, J.W.S. Liu
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A novel multiversion concurrency control algorithm is presented which substantially improves concurrency between batch and online transactions. A bulk retrieval transaction which reads all data objects and partial update transactions which read and write a few data objects are studied as batch and online transactions, respectively.
Ryoji Kataoka+2 more
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The concurrency control problem for multiversion database systems (MVDBSs) with system-imposed upper bounds on the total number of data item versions stored in the database is considered. Concurrency control theory for MVDBSs is reviewed. The inadequacy of this theory for analyzing concurrency control algorithms for k-version database systems (KVDBSs ...
Tadeusz Morzy
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