Chapter 5, on the device of hierarchy controlling, production process is managed by two accounts. And designed parts-account and working procedure account in detail.

• 第五章以分层递阶控制策略，采用两级台帐管理生产过程，详细设计了零件台帐和工序台帐的数据库，给出了缺件清单生成和零件状态查询等功能单元的实现。