Under simulation of information synthesis and integration, aiming at problems of model integration management and service mechanism, put forward a new idea of MOD (Modeling on Demand). Use top-down research procedure to analyze and design MOD, establish a meta-synthesis model for information system based on MOD. First, on the basis of analyzing establishment information flow, string enterprise's major functions of each region to establish basic function set. Then carry out subsystem or submodule analysis according to the basic function set. Finally through information flow, process coordination to subsystem or submodule.%在信息系统综合集成模拟环境中,针对模型集成管理与模型服务机制问题,提出按需建模(MOD)思想.对MOD进行分析和设计,采用自上而下的研究方式,建立基于MOD的信息系统综合集成模型.首先在分析企业信息流的基础上,按信息流把企业的各职能域的主要功能串起来建立基本功能集;然后按基本功能集进行子系统或子模块的分解;最后按信息流对子系统或子模块进行协调.
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