Results 271 to 280 of about 8,384 (311)

Theory of concurrency control

2005
This paper is a review of recent theoretical work on the problems which arise when many users access the same database. For a detailed exposition of this material, the interested reader is referred to a forthcoming monograph [Pa4].
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On concurrent tests of fuzzy controllers

Proceedings. 1998 28th IEEE International Symposium on Multiple- Valued Logic (Cat. No.98CB36138), 2002
In this paper, we propose concurrent tests of fuzzy controllers. We assume multiple stuck-at faults in membership functions. For tests of antecedent membership functions, we observe the sum of degrees by matching a current measured input with each function and that of degrees at several easily calculated co-ordinates.
Naotake Kamiura, Yutaka Hata, Kazuharu Yamato   +2 more
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Concurrency control for object bases

Information Systems, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pankaj Goyal, T. S. Narayanan, Fereidoon Sadri   +2 more
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Can-Follow Concurrency Control

IEEE Transactions on Computers, 2007
Can-follow concurrency control permits a transaction to read (write) an item write-locked (read-locked) by another transaction with almost no delays. By combining the merits of 2PL and 2V2PL, this approach mitigates the lock contention not only between update and read-only transactions, but also between update and update transactions.
Peng Liu 0005, Jie Li 0002, Sushil Jajodia, Paul Ammann   +3 more
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An evaluation of distributed concurrency control

Proceedings of the VLDB Endowment, 2017
Increasing transaction volumes have led to a resurgence of interest in distributed transaction processing. In particular, partitioning data across several servers can improve throughput by allowing servers to process transactions in parallel. But executing transactions across servers limits the scalability and performance of these systems. In
Rachael Harding, Dana Van Aken, Andrew Pavlo, Michael Stonebraker   +3 more
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Granularity hierarchies in concurrency control

Proceedings of the 2nd ACM SIGACT-SIGMOD symposium on Principles of database systems - PODS '83, 1983
This paper shows that granularity hierarchies may be used with many types of concurrency control algorithms. Hierarchical versions of a validation algorithm, a timestamp algorithm, and a multiversion algorithm are given, and hierarchical algorithm issues relating to request escalation and distributed databases are discussed as well.
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A theorem in database concurrency control

Journal of the ACM, 1982
Consider two straight-line programs a and b, and let h be a set of sequences of steps of a and b, possibly interleaved, but each containing all steps of a and b in the right order. A necessary and sufficient condition is given for h to be realisable as the set of all sequences of steps which are legal under some insertion of lock-unlock steps between ...
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Serializability, Concurrency Control, and Replication Control

2000
Transaction management comprises different aspects such as concurrency control, recovery control, and replication control. Usually, only one or at least two of these aspects are considered in theories of transaction management--the other aspects are ignored.
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A Note on Concurrent Programming Control

IEEE Transactions on Software Engineering, 1987
An extension to Dijkstra's solution [1], of the problem of limiting access by multiple processors to a single resource, is described. The solution has similar delay characteristics to Ferguson's solution [3] while using less complex data structures. Some claims in [3] are examined.
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Verifiable concurrent programming using concurrency controllers

Proceedings. 19th International Conference on Automated Software Engineering, 2004., 2004
Aysu Betin-Can, Tevfik Bultan
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