飞机订票系统设计：要求：假定民航机场共有n个航班，每个航班有一航班号、确定的航线（起始站、终点站）、确定的飞行时间（星期几）与一定的成员订额。试设计一飞机订票系统，使之能提提供下列服务： 1、航班信息录录入功能(航班信息用文件保存) 2、航班信息浏览功能 3、查询航线：（至少一种查询方式）1按航班号查询2按起点站查询3按终点站查询4按飞行时间查询

-Airline reservation system design: requirements: assume that the total of flights of civil aviation airport, and each flight has a flight number, to determine the route (the starting point, terminus), to determine the flight time (several weeks) to set the amount of certain members. Try to design an airline reservation system, so that it can mention the following services: flights recorded entry (flight information, save the file), flight information browsing capabilities, the query routes: (at least one query) 1 Flight No. 2 starting point for query 3 terminus query query by time of flight