另一方面，数据库管理员可以对数据库进行远程管理，进行数据的增、删、查、改，大大方便了数据的维护与更新工作。
In the other hand, database manager can add, delete, check and change data to maintenance and update database by long-distance management.
结论：VPN技术在PACS系统中的应用，投入和运行成本低、维护简单、性能可靠，可实现对PACS系统远程访问与管理的目的。
Conclusion The application of VPN technology to PACS, which is characterized by low expense, dependable performance, simple maintenance, can realize remote access and management of PACS.
依赖NGN网的便利，计费系统可以方便的实现计费管理、系统维护、远程升级。
With the technological advantages of NGN, the billing management system could promptly realize billing management, system maintenance and remote upgrading.
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