目 录
一、 引言..........................................................................................................................................3
1.1 编写目的.....................................................................................................................................3
1.2 项目背景.....................................................................................................................................3
1.3 术语定义.....................................................................................................................................3
1.4 参考资料.....................................................................................................................................3
二、 任务概述..................................................................................................................................4
2.1 功能概述.....................................................................................................................................4
2.2 约束条件.....................................................................................................................................5
2.3 目标.............................................................................................................................................6
2.4 用户的特点.................................................................................................................................6
三、数据流图与字典........................................................................................................................6
3.1 数据流图.....................................................................................................................................6
3.1.1 数据流图图形.....................................................................................................................6
3.1.2 数据流述...........................................................................................................................10
3.2 数据字典...................................................................................................................................12
3.2.1 数据项说明......................................................................................................................12
3.2.2 数据结构说明..................................................................................................................15
四、 系统接口................................................................................................................................17
4.1 用户接口...................................................................................................................................17
4.2 硬件接口...................................................................................................................................18
4.3 软件接口...................................................................................................................................18
五、 性能需求................................................................................................................................18
六、 软件属性................................................................................................................................18
6.1 可使用性 .................................................................................................................................18
6.2 系统安全...................................................................................................................................18
6.3 可维护性...................................................................................................................................19
6.4 可移植性...................................................................................................................................19
七、 其他需求................................................................................................................................19
7.1 数据库需求................................................................................................................................19
7.2 系统操作需求...........................................................................................................................19
7.3 故障及其处理............................................................................................................................19