Research on Model System Design Based on J2EEZOU Xiao-tian (School of Management,Wuhan University of Technology,Wuhan 430070,China)Based on J2EE design pattern,the paper discussed and solved several key problems on model system development,including creating models,managing a large quantity of model instances and connecting to a database.The results show that the development of model system under J2EE design pattern has a lot of advanteges than other object oriented design patterns.DSS;model;model management;J2EE