Heterogeneous databases interoperation is related to distributed computing, so the paper studied CORBA technique.

异构数据库互操作研究涉及到分布式计算，为此，本文研究了CORBA技术。

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How to shield the difference among the distributed heterogeneous database is the primary problem to be solved to implement the mutual visiting among the multiple databases.

如何屏蔽分布在不同站点上的异构数据库之间的差异，是实现多个数据库互访要解决的首要问题。

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Since distributed spatial database will be the main data source of Internet GIS, we have to cope with the intercommunication between heterogeneous databases and systems.

随着空间数据获取能力的飞速发展，分布式存储管理的空间数据库将成为网络GIS的主要数据源。

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