火车站售票管理系统
9 数据库设计 9.1 P1售票功能
售票员#c工作号Number (10)oc姓名Variable characters (30)oc性别Variable characters (2)管理员#a工作号Number (10)oa姓名Variable characters (30)oa性别Variable characters (2)管理售票车票#车票编号Number (21)o日期时间Timeo票价Number (3,1)o起始站Variable characters (15)o座位号Number (3)o车票类型Variable characters (30)o车次Variable characters (10)...持有更新乘客#身份证号Number (18)op姓名Variable characters (30)o类型Variable characters (30)
图13 售票功能CDM
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火车站售票管理系统
乘客售票c工作号numeric(10)
售票c工作号
图15 售票功能LDM
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火车站售票管理系统
9.2 P2查询功能
售票员车票#c工作号Number (10)#车票编号Number (21)oc姓名Variable characters (30)o日期时间Timeoc性别Variable characters (2)c查询o票价Number (3,1)o起始站Variable characters (15)o座位号Number (3)o车票类型Variable characters (30)o车次Variable characters (10)...查询乘客#身份证号Number (18)op姓名Variable characters (30)o类型Variable characters (30)图16查询功能CDM
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火车站售票管理系统
车票车票编号numeric(21)
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火车站售票管理系统
车票Number (21)Number (18)Number (10)TimeNumber (3,1)Variable characters (15)Number (3)Variable characters (30)Variable characters (10)(D) #o
9.3 P3管理统计功能
管理管理员#a工作编号Number (10)on姓名Variable characters (30)os性别Float (2)查看售票员#工作编号Number (10)o姓名Variable characters (30)o性别Variable characters (2)...打印报表#n编号Number (10)ot类型Float (15)oa报表时间Variable characters (15)...销售#oooooo编号日期时间起始站票价座位号车票类型车次...车票Number (21)TimeFloat (15)Number (3,1)Number (5)Variable characters (10)Variable characters (10) 22
图19 管理统计功能CDM