Concurrency control
An Efficient Merged Concurrency Control Method for Concurrency Conflicts
... The transaction request needs the access to data in the multiple machines existed in the distributed storage system [3]. To ensure the serializability and to meet the requirements of the application semantics, the ...
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Analysis of Emerging Field Related to Distributed Concurrency control
... The concept of nested transactions offers more decomposable execution units and finer grained control over concurrency and recovery than flat transactions. Furthermore, it supports the decomposition of a ...
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Comparison and an Improved Validation Optimistic Approach for Concurrency Control
... for concurrency control, the objects remain locked and are unavailable for other transactions during the atomic commit protocol, although an aborted ...
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Multiversion Concurrency Control with the Precedence Graph Generation Algorithm
... Abstract— Simultaneous access of a shared record by multiple transactions leads to conflicts while writing. Such scenario generates the problems like lost update, dirty read, non- repeatable read etc . In such a case, ...
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Performance evaluation of concurrency control and locking in distributed database systems
... Menasce and Nakanishi 61 proposed an analytic model to evaluate two different concurrency control mechanisms; the locking oriented (LOCC) and conflict oriented (COCC) mechanisms. They decomposed the ...
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A Strategy to prioritize the waiting transactions to achieve Concurrency Control in Mobile Environments
... makes concurrency control in mobile environments a challenging ...Pessimistic concurrency control mechanisms may not be suitable in mobile database environments as the wireless devices are ...
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Concurrency Control in Cad Using Artificial Neural Network and Fuzzy Logic
... Concurrency Control (CC) is an important concept for proper transactions on objects to avoid any loss of data or to ensure proper updation of data in the ...
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A Survey on Efficient Concurrency Control Algorithm in Distributed Database Systems
... Reference [2] explains that in one phase commit protocol (IPC), the cost of atomic commit is reduced by eliminating the voting phase of 2PC: two communication steps, together with their associated forced log writes, are ...
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Effective Correctness Criteria for Serializability in Multiversion Concurrency Control Technique
... The Multiversion 2PL protocol keeps multiple versions of each data time in the system to support transaction and concurrency control. A single timestamp has been kept for each version of a data item [2]. ...
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Concurrency Control and Security Issue in Distributed Database System
... Concurrency control: It is the activity of processing concurrent accesses to a database in Distributed Database ...distributed concurrency control technique is strong strict two-phase ...
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Implementation of Artificial Neural Network and Fuzzy Logic for Concurrency Control in CAD Data Base
... Concurrency Control (CC) is an important concept for proper transactions on objects to avoid any loss of data or to ensure proper updation of data in the ...
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Concurrency control in distributed caching
... returned. Concurrency control deals with issues involved with allowing multiple end users simultaneous access to shared entities, such as objects or data ...use concurrency control methods, so ...
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Concurrency Control in Distributed Caching.
... when the load of requests is high. In our experiments, the single thread model performed the worst in terms of elapsed time. For our scenario and experiments, the single thread model performs similar to the baseline case ...
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On Concurrency Control for Inverted Files
... Few if any Information Retrieval (IR) systems have had to deal with Concurrency Control (CC) on inverted files. In order to examine the issues involved in CC on inverted files, the effects of various ...
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IMPLEMENTATION OF ARTIFICIAL NEURAL NETWORK IN CONCURRENCY CONTROL OF DISTRIBUTED DATABASE SYSTEM
... Executions of transactions guaranteed to ensure consistency is identified by the concept of serializability with those schedules of reads / write. There are two types of schedule Serial schedule and Non-Serial schedule. ...
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Comparative Analysis of Distributed Concurrency Control Protocols
... Abstract: Concurrency control algorithms have traditionally been based on locking and timestamp ordering ...optimistic concurrency control scheme have been propose which is particularly ...
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An overview of Concurrency Control Techniques in Distributed Database
... In the distributed scheme, each site generates a unique local timestamp by using either a logical counter or the local clock. We obtain the unique global timestamp by concatenating the unique local timestamp with the ...
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Efficient geographic information systems: Data structures, Boolean operations and concurrency control
... of govern provide methods of analysis and simulation on geographic sceneries required manual ability to record, manage and analyze geographic previously infeasible using were of realisti[r] ...
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Day 24 - Unit III - Concurrency Control – Locking Mechanisms- Two Phase Commit Protocol.ppt
... The binary locking scheme is too restrictive for database items because at most, one transaction can hold a lock on a given item.. We should allow several transactions to access the s[r] ...
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Tailor-made Concurrency Control - distributed transactions as a case
... Further, the binary relations WR-RW-WW Y (H) and WR-RW-WW y (H) contain the sets of ordered pairs of transactions corresponding to the write-read, read-write and write-write conflicts in[r] ...
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