The entire Section 4 is on designing dimensional databases, and the manual offers a very good overview of dimensional data modeling and implementing a dimensional database design with Informix.
整个Section 4都关于设计维度数据库，该手册很好地概述了维度数据建模和使用Informix实现一个维度数据库设计。
The system development is divided into 5 steps: use case modeling, class diagram analysis, database design, program implementation, installation manual.
本系统实现分成五步：分别是用例建模、类图分析、数据库设计、程序实现、安装手册。
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