虽然数据库应用程序的性能会受许多因素影响，但是我们着重讨论配置而不是诸如容量规划、数据库设计或应用程序设计之类的因素。
Although performance of a database application can influenced by many factors, we focus on configuration rather than on such things as capacity planning, database design, or application design.
而且，在许多公司里规划设计者的角色和程序设计者是分开的。
In addition, in many companies the roles of layout designer and programmer are separate.
本文阐述了系统规划、系统分析、系统设计及系统程序设计。
In this paper, system plan and system analysis and system design and system program design were described.
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