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多重查询优化技术在移动数据库中的应用 被引量:2

Applying Multiple Query Optimization in Mobile Database
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摘要 移动计算的一个非常重要的特点就是在有限的网络带宽上进行数据分发 .将多重查询优化技术应用于移动数据库的数据分发 ,中央服务器对某一时间段内移动客户的请求进行优化 ,然后通过一定的策略对数据集进行广播 .模拟试验证明该数据分发策略较简单的基于拉动的策略极大地节约了网络带宽 。 An important application of mobile networks is data dissemination over limited bandwidth channels. In this paper, we apply multiquery optimization to batches pull queries of a time window in mobile database,then broadcast the data elements to the mobile users. The simulated experiment indicate a significant savings in the bandwidth usage and also a significant reduction in the wait time in this strategy.
出处 《小型微型计算机系统》 CSCD 北大核心 2004年第8期1538-1541,共4页 Journal of Chinese Computer Systems
关键词 移动数据库 公共子表达 多重查询优化 mobile database common subexpression query optimization
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参考文献8

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