城市产业规划的经济分析模型库设计

针对城市产业规划中经济分析模型的复杂化特点,从减少模型库冗余性的角度,提出5条模型库设计原则,区分部件模型与执行模型,以可执行文件为部件模型形式,以数据序列描述执行模型,通过代数式数据化和执行模型数据化,增强了关系数据库的知识表达能力,改善了模型的可读性,并给出了混合型模型库管理系统的逻辑设计.

Design of Economic Model Base in City Industry Programming

Aiming at the complexity of economic model in city industry programming,five principles about how to design model base are advanced to decrease redundancy in model base,component model and executable model are distinguished,component model is expressed as executable file and executable model is expressed as data sequence in data table.By digitizing the algebraic expression and executable model,the capacity of knowledge expressed in relation data base is enhanced,and the readability of model is increased.Based on these,the model base management system is designed by mixing file system and relation data base system,redundancy is decreased and uniformity is increasing in model base.