很多数据库应用软件都支持复杂的数据库复制操作。
Many database applications can work with multiple copies of the database.
介绍了工程参数化图形数据库应用软件的设计思想，开发技术以及在工程实践中的应用。
This article describes the idea for designing, the technology for developing and the application in engineering practice of engineering Parameterization Drawing Database application.
在水库洪水调度系统等数据库应用软件的开发过程中，存在数据镜像、汇总、备份等实时主动的数据处理需求。
In the development of the reservoir flood control system software, there are many requirements about real active data processing, such as data mirroring, summation and coping.
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