exp导出工具将数据库中数据备份压缩成一个二进制系统文件.可以在不同OS间迁移-exp Export tools in the database backup file compressed into a binary system. you can move between the different OS

这个压缩文件里的内容是关于oracle数据库的ppt，基本讲述了oracle数据的全部内容-the file consists the info about oracle dataset, it almost includes all knowledge about oracle.