Land resource management need to gain the cadastre data from the distributed and heterogeneous database.

从分布异构的地籍数据库提取数据，实现国家地籍数据总归户。

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Then the security information management model in the SKJ2004 project is taken as an example to describe the implementation process of heterogeneous distributed database systems based on CORBA.

并以正在研发的数字矿井项目中的安全信息管理模块为例，介绍了基于CORBA的异构分布式数据库系统的实现方法。

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The information integration for the NPP heterogeneous environment is implemented by the use of technologies of database and product data management (PDM).

采用数据库和工程数据管理技术实现核电厂异构环境下的信息集成。

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