探讨了用户信息需求的定义与特点，阐述了传统用户信息需求和网络用户信息需求的研究现状。

This paper probes into the definitions and features of users' information demand, and expounds the current research situation of the information demands of the traditional users and the network users.

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以《管理信息系统》数据库毕业设计为例，探讨了网络环境下数据库设计的范式要求和网络要求。

Taking Management Information System (MIS) database graduation design on the network as the example, this paper discusses the normal form requirement and network requirement in this kind of design.

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这样做会减少复制的序列化的开销、网络带宽要求和磁盘要求。

Doing so reduces the serialization overhead, the network bandwidth requirements, and disk requirements for replication.

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