The problem has been puzzle, with school-yard how to join to Internet and how to ensure net security.

因特网上黑客已经成为越来越严重的问题， 因特网日益成为一个不安全的网络。

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Can interlink with the other systems through web net and date-base system conveniently, can not only realize data sharing function, but also ensure the independent ability and security of the system.

通过网络和数据库系统能方便地同其他系统互连，既能实现数据共享，又能保证系统的独立性、安全性。

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