Results 261 to 270 of about 991,008 (302)

Distributed concurrency control with limited wait-depth

[1992] Proceedings of the 12th International Conference on Distributed Computing Systems, 2003
Distributed wait-depth-limited (DWDL) concurrency control, a locking-based method that limits the wait-depth of blocked transactions to one, which assures that deadlocks are resolved as part of regular transaction processing is described. The performance of DWDL is compared with that of distributed two-phase locking (2PL) and the wound-wait concurrency
John T. Robinson, Jayant R. Haritsa, Peter A. Franaszek, Alexander Thomasian   +3 more
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Distributed autonomous control of concurrent combat tasks

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001
This article discusses the use of decentralized model predictive control to manage a set of related combat tasks (e.g., the destruction of anti-aerial defenses in a given geographical area by a wing of uninhabited air vehicles (UAV)). The controller is meant to operate autonomously as it attempts to manage conditions in which success in all its ...
Ruth D. Kreichauf, J.E. Tierno
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Performance evaluation of a distributed concurrency control algorithm

Computers & Electrical Engineering, 1986
Concurrency control (CC) algorithms are important in distributed database systems to ensure consistency of the database. A number of such algorithms are available in the literature. The issue of performance evaluation of these algorithms has been recognized to be important. However, only a few studies have been carried out towards this.
Patnaik, LM, Sundararaman, K
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Approaches to concurrency control in distributed data base systems*

1979 International Workshop on Managing Requirements Knowledge (MARK), 1899
Whenever multiple users or programs access a data base concurrently, the problem of concurrency control arises. The problem is to synchronize concurrent interactions so that each reads consistent data from the data base, writes consistent data, and is ...
P. Bernstein, N. Goodman
semanticscholar   +1 more source

A hierarchical controller for concurrent accessing of distributed databases

ACM SIGARCH Computer Architecture News, 1978
An access controller for a distributed database is a (central or distributed) structure which routes access requests to the different components of the database. Such a controller is also supposed to resolve the conflicts between concurrent requests, if any, such that deadlock situations never arise.In this paper, some architectures for distributed ...
openaire   +2 more sources

Eris: Coordination-Free Consistent Transactions Using In-Network Concurrency Control

Symposium on Operating Systems Principles, 2017
Distributed storage systems aim to provide strong consistency and isolation guarantees on an architecture that is partitioned across multiple shards for scalability and replicated for fault tolerance.
Jialin Li, Ellis Michael, Dan R. K. Ports   +2 more
semanticscholar   +1 more source

Concurrency control for distributed real-time databases

ACM SIGMOD Record, 1988
The concurrency control of transactions in a real-time database must satisfy not only the consistency constraints of the database but also the timing constraints of individual transactions. In this paper, we present a real-time concurrency control protocol that can be used in a distributed and decomposable real-time database.
Ragunathan Rajkumar, John P. Lehooczky, Lui Sha   +2 more
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Concurrency control based on distributed cycle detection

1987 IEEE Third International Conference on Data Engineering, 1987
This paper presents a novel optimistic concurrency control mechanism for distributed database systems. The optimistic concurrency control mechanism is based on a distributed algorithm for cycle detection which determines whether a transaction violates serializability or not. There are three advantages of this concurrency control mechanism.
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Role-based concurrency control for distributed systems

20th International Conference on Advanced Information Networking and Applications - Volume 1 (AINA'06), 2006
A concept of role is widely and significantly used to design and implement secure information systems. A role shows a job function in an enterprise. In a role-based access control (RBAC) model, a role is a set of access rights. A subject doing a job is assigned with a role showing the job. In addition, a subject can play multiple roles in an enterprise.
Makoto Takizawa, Tomoya Enokido
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Versioning and concurrency control in a distributed design environment

Proceedings 1992 IEEE International Conference on Computer Design: VLSI in Computers & Processors, 2003
A design data management method in a distributed design environment is described. This method is based on detecting the difference between the original design data and modified design data. One of the advantages of this method is that the precise difference among versions can be identified.
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