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Showing 1 to 20 of 58 for “"Concurrency Control"”.
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Concurrency Control in Real-Time Database Systems
… Efficient resource scheduling algorithms and concurrency control protocols are required to maximize the number of transactions satisfying their timing constraints. In our work, we concentrated on the concurrency control problem in RTDBS's. We evaluated the real-time performance of existing …
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Concurrency control for multiprocessor event-driven systems
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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A distributed concurrency control protocol considering read-only transactions
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:59:04Z Item is restricted indefinitely.
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An evaluation of concurrency control with one thousand cores
… as the number of cores increases, the problem of concurrency control becomes extremely challenging. With hundreds of threads running in parallel, the complexity of coordinating competing accesses to data will likely diminish the gains from increased core counts. To better understand just how …
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Transaction management for mobile objects using optimistic concurrency control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases
… with other such applications, the transaction concurrency control mechanisms within the database must also preserve the temporal dependencies. A basis for preserving temporal dependencies is established by using (within the applications and databases) real-time timestamps to identify and order …
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Performance Evaluation of Concurrency Control Algorithms in Distributed Database Management Systems
Submitted by Carly Hafner (chafner2@illinois.edu) on 2014-07-02T17:05:43Z No. of bitstreams: 1 1985_Siebel.pdf: 979777 bytes, checksum: a5d6910614e5f69b4cb0cf162c594b44 (MD5)
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A Model for the Design of Distributed Databases (Concurrency Control, Update Synchronization, File Allocation)
… model integrates two major design issues namely Concurrency Control and Data Distribution. The central node locking mechanism is incorporated in developing a non linear integer programming model. Two solution algorithms are proposed, one of which has been implemented in FORTRAN V. The allocation …
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Optimism vs. locking : a study of concurrency control for client-server object-oriented databases
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Performance of Concurrency Control Methods in Distributed Database Management Systems (Timestamp Ordering, Two-Phase Locking, Optimistic Scheme, Restart, Transaction Blocking)
… restart overhead on the performance of concurrency control methods (CCMs) have been studied using the simulation approach. In order to do this, detailed simulation models for a representative sample of concurrency control mechanisms, namely Basic Timestamp Ordering (BTO), Basic …
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Performance Study of Two Phase Locking in Single-Site and Distributed Database Systems (Concurrency Control, Queueing Network, Pre-Claim, Ordering)
Two phase locking (2PL) as a concurrency control mechanism (CCM) is studied in the contexts of single-site database systems (SDBSs) and distributed database systems (DDBSs).
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Adaptive Multi-Granularity Locking Protocol in Object -Oriented Databases
… much research has been done on developing concurrency control protocols for conventional databases like relational databases over the last 30 years in the concurrency control area, many of these protocols are not designed to be used in object-oriented database originally. Consequently, many …
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A Framework for Data Sharing in Computer Supported Cooperative Environments
<p>Concurrency control is an indispensable part of any information sharing system. Co-operative work introduces new requirements for concurrency control which cannot be met using existing applications and database management systems developed for non-cooperative environments. The emphasis of …
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Efficient Concurrent Operations in Spatial Databases
… Space-Filling Curve (SFC) combined with B-trees. Concurrency control protocols have been designed for some pure multidimensional indexing structures, but none of them is suitable for variants of R-trees with object clipping, which are efficient in searching. On the other hand, there is no …
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HyflowCPP: A Distributed Software Transactional Memory Framework for C++
… the complicated and error-prone task of explicit concurrency control based on locks (e.g., deadlocks, livelocks, non-scalability, non-composability), which are aggravated in a distributed environment due to the complexity of multi-node concurrency. At its core, DTM's atomic section-based …
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