2.4.2 用例描述.............................................................................................................................7
2.5 功能模块 4-购物模块 .............................................................................................................9
2.5.1 用例图 .................................................................................................................................9
2.5.2 用例描述.............................................................................................................................9
2.6 功能模块 5-系统管理模块..................................................................................................10
2.6.1 用例图...............................................................................................................................10
2.6.2 用例描述 ..........................................................................................................................10
2.7 功能模块 6-统计模块...........................................................................................................12
2.7.1 用例图...............................................................................................................................12
2.7.2 用例描述 ..........................................................................................................................12
3 系统非功能需求..............................................................................................................................13
3.1 可用性........................................................................................................................................13
3.2 可靠性........................................................................................................................................13
3.2.1 可恢复性 ..........................................................................................................................13
3.2.2 可维护性 ..........................................................................................................................13
3.3 性能 ............................................................................................................................................13
3.3.1 响应时间 ..........................................................................................................................13
3.3.2 吞吐量...............................................................................................................................13
3.3.3 并发用户数......................................................................................................................13
3.4 可支持性...................................................................................................................................14
3.4.1 可适应性 ..........................................................................................................................14
3.4.2 可配置性 ..........................................................................................................................14
4 系统接口 ...........................................................................................................................................14
4.1 用户界面...................................................................................................................................14
4.2 硬件接口...................................................................................................................................14
4.3 软件接口...................................................................................................................................14
4.4 通信接口...................................................................................................................................14
5 术语表................................................................................................................................................15
6 附录 ....................................................................................................................................................15
6.1 参考资料...................................................................................................................................15
6.2 辅助工具...................................................................................................................................15