说明：  PowerBuilder实验报告 几个实验：PowerBuilder窗口设计，数据定义，数据操纵，PB数据窗口设计，PB菜单设计，小型数据库应用系统开发
(PowerBuilder experimental report several experiments: PowerBuilder window design, data definition, data manipulation, PB data window design, PB menu design, a small database application system development)