Based on the features of the three-tier architecture system of the software,this essay introduces the demand analysis of the performance management system based on the three-tier architecture.In addition,it probes into the systematic designs and realization of performance management modules and access interface components of the data base.%结合软件三层架构体系的特点，对基于三层架构的成绩管理业务系统进行需求分析，并对成绩管理业务模块和数据库访问接口组件进行了系统设计和实现。
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