1 引言..................................................................................................................................................3
1.1 编写目的.................................................................................................................................3
1.2 背景.........................................................................................................................................3
2 外部设计..........................................................................................................................................3
2.1 标识符和状态.........................................................................................................................3
2.2 使用它的程序.........................................................................................................................3
3 结构设计..........................................................................................................................................4
3.1 概念结构设计.........................................................................................................................4
3.2 逻辑结构设计.........................................................................................................................7
3.3 物理结构设计.........................................................................................................................8
4 运用设计........................................................................................................................................12
4.1 数据字典设计.......................................................................................................................12
4.2 安全保密设计.......................................................................................................................12
