异构的分布数据库系统 heterogeneous distributed database system 主数据库系统 master data bank system ..
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The realization of integral query of distributed heterogeneous database on the J2EE platform has been stressed while the original system has been integrated to the new system.
重点讨论了原有系统集成到新系统中，实现了分布式异构数据库在J2EE平台下的综合查询问题。
Based on the unified data modeling, this resolution realizes the uniform request service to distributed heterogeneous spatial data by metadata and multi-database system.
该解决方案通过建立统一的数据模型，使用元数据与多数据库系统实现了对分布的异构的空间数据的统一访问请求服务。
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