使用相似和事务传送处理移动环境下的过载和事务重启问题  

Similarity-Based and Transaction Shipping Approach for Overload and Restart Transaction of MDRTDBS

作　　者：罗琼[1] 宋沛[1] 

机构地区：[1]广州大学物理与电子工程学院,广州510006

出　　处：《现代计算机》2013年第5期17-21,共5页Modern Computer

摘　　要：为减少移动实时数据库中优先级倒置而引起的事务重启和过载问题,探讨并使用事务船载方法来减轻移动网络跨区处理以及优先级倒置时所引起的过载问题。研究并采纳基于相似的分布式高优先级2阶段锁定协议(SDHP-2PL)来减少优先级倒置时事务重启的数量以保证移动实时环境下数据的正确性和截至时间的满足。由于采用事务船载方法使得事务的过载通信数量大量减少,同时使用相似概念也增加锁请求被授予的概率。In order to reduce the possibility of restart transaction and overload in processing transaction over mobile real-time database systems by priority inversion, discusses and uses the transaction shipping approach to reduce the overload in processing a transaction over mobile network. Meanwhile studies and adopts the similarity-based distributed real-time lock protocol to reduce possibility of restart transaction to insurance data-correction and deadline of real-time transaction under mobile real-time environments. The number of communication between mobile client and base station by the transactions shipping approach decrease highly, the use of similarity concept also increase lock-request possibility.

关 键 词：事务船载方法 优先级倒置 基于相似的移动分布式高优先级2阶段锁定 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]