足球运动员信息管理系统，包括国籍，所在联赛，年龄，擅长位置等基本信息，实现数据的输入、输出、查询、删除、更新等。可与数据库连接。- Football player information management systems, including nationality, where the league, age, good location and other basic information, data input, output, query, delete, update, an