Such a decomposition can work, but only if your system decomposes cleanly into such discrete parts and your team can manage a heterogeneous environment.

这样一个分解会工作的很好，如果你的系统能清晰地分解成这些不想关联的部分，并且你的团队能掌控这样一个混杂的环境。

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Decomposition and optimization of global query is one of hard problems in heterogeneous database integration.

全局查询的分解与优化是异构数据库的集成中许多难题之一。

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In view of the significance of query decomposition and optimization in the Heterogeneous Data Resource Integration System, in-depth research on this aspect was mainly conducted.

考虑到查询分解及查询优化在异构数据集成系统中的重要意义，主要就这一方面进行了深入研究。

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