Such a decomposition can work, but only if your system decomposes cleanly into such discrete parts and your team can manage a heterogeneous environment.
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。
3
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.