A Real Time Optimistic Strategy to achieve Concurrency Control in Mobile Environments Using On-demand Multicasting
Salman Abdul Moiz (1), Lakshmi Rajamani (2), ((1) Centre for, Development of Advanced Computing, India, (2) Osmania University, India)

TL;DR
This paper proposes a real-time optimistic concurrency control strategy using on-demand multicasting for mobile databases, improving throughput and reducing abort rates amid mobility and disconnections.
Contribution
It introduces a novel optimistic concurrency control approach with application-specific conflict detection tailored for mobile environments.
Findings
Increased system throughput compared to existing optimistic strategies.
Reduced transaction abort rates in mobile database simulations.
Guarantees data consistency despite mobility and disconnections.
Abstract
In mobile database environments, multiple users may access similar data items irrespective of their physical location leading to concurrent access anomalies. As disconnections and mobility are the common characteristics in mobile environment, performing concurrent access to a particular data item leads to inconsistency. Most of the approaches use locking mechanisms to achieve concurrency control. However this leads to increase in blocking and abort rate. In this paper an optimistic concurrency control strategy using on-demand multicasting is proposed for mobile database environments which guarantees consistency and introduces application-specific conflict detection and resolution strategies. The simulation results specify increase in system throughput by reducing the transaction abort rates as compared to the other optimistic strategies proposed in literature.
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