SSD7 Ex. 5 answers, 100 accurate-SSD7 Ex. 5 answers, 100 accurate

该程序为数据库编程ERmodel的绘制。绘制工具为powerdesigner。画面美观，实力以及关系标注清楚。并附有tet文档描述实力的属性。适合学习数据库编程同学。（ex5）-The program was drawn ERmodel of database programming. Drawing tools powerdesigner. Screen appearance, strength and relationships c