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Research on Concurrency Control Strategy Oriented Embedded Real-Time Database System

Author: TanPeng
Tutor: WangLei
School: Xi'an University of Technology
Course: Applied Computer Technology
Keywords: Embedded Systems Real - time database system Concurrency Control Functional alternative Transaction value
CLC: TP311.13
Type: Master's thesis
Year: 2009
Downloads: 16
Quote: 0
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Abstract


In this paper, the traditional concurrency control protocols can not provide high reliability for embedded real-time database system , with the basic principle of the alternative models of real-time transaction capabilities and transaction value of a new concurrency control for embedded real - time database system strategy. The strategy uses a real - time transaction model based on functional alternative for functional alternative can be improved by strengthening the adaptability and resilience of the transaction to transaction success rate characteristics , and related research , and some progress has been made ??. These activities include: first, put forward a new real-time transaction pre- analysis method , through the transaction decomposition and schedulability analysis of the two-step process , and ensure the correct implementation of the concurrency control strategy ; through the phase between the static analysis of alternative compatibility problem , favorable conditions for the elimination of the conflict within the same transaction ; third, the proposed optimal alternative algorithm . The algorithm targeted selection of alternative , and thus try to avoid the conflict affairs generation . Even if the conflict is inevitable , and you can select the optimal alternative to participation in concurrency control , reduce conflict number ; Fourth, conflict affairs digestion problems , this paper draw on transaction value theory , digestion algorithm , based on the value of the function conflict reached digestion purpose at the same time maximizing system revenue , improve the success rate of the real-time transaction . Through theoretical analysis and simulation results indicate that this concurrency control strategy relative to traditional methods , has certain advantages in solving embedded restart rate , ultra deadline rate , the success rate and the system value gains the reliability problems of the real - time database system has certain reference value and practical significance .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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