Based on the introduction of network system integration technique, we discuss the structure features of multi database system and integrated network system.

在介绍网络系统集成方法的基础上，重点讨论了多数据库系统与网络集成系统各自的结构特点。

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Finally, there was a brief introduction of the Ecological Environmental Database Management Prototype System of Yunnan Boundary Region.

最后，简要介绍了云南边境生态环境数据库管理原型系统的建设。

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The ticket system is introduced briefly, and the main introduction is the design of the database.

介绍了票务系统，阐述了其数据库的设计。

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These range from the introduction of the Oyster card system on public transport in London, the National Transplant Database and the Pension Service's Pension Credit system.

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