一个专用DSS的设计与实现

Design and Implementation of a Specitic DSS

本文介绍了作者设计并研制的一个公路网络规划决策支持系统RDSS。设计中提出了外部模式级、逻辑结构级和物理实现级的三级概念结构,定义了决策模型操纵语言(MML),实现了对决策模型的各种必要操作。此外,还介绍了决策模型库中各文件结构的设计及实现。

In this paper, a practical decision support system is developed, which is intended to be used in the regional road network planning. An architecture of model base management system including External Schema Level, Logical Schema Level and Physical Schema Level is proposed. Also designed was a Model Manipulation Language (MML) with which the process of models can be implemented. Besides, the design and implementation of file structures in the decision model base are introduced.