For data that is accessed and edited by many different users with varying levels of privilege across heterogeneous systems, a database of some kind is the only option.

对于要由层次体系中具有不同权限级别的用户所访问和编辑的数据，某种形式的数据库是惟一的选择。

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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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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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