所以大多数研究分布式查询优化以减少通讯开销为目标。
So most research of distributed query optimization aim at reducing communication cost.
本文分析了虚拟制造环境下的工况数据采集与任务查询系统的作用、构成、功能、信息集成和通讯。
In this paper, the effect, structure, function, information integration and communication of floor data collection and assignment enquiry system in Virtual Manufacturing Environment is analyzed.
论文第二章通过对各种可以实施的方案的优缺点进行分析与比较，从而确定了网络方案，串行通讯方案，数据库方案，查询模式的确定。
The second of the paper analyzed and compare with the several schemes, conformed network scheme, bunch communication scheme, database scheme, and conformed query mode.
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