重点突出了演绎数据库的基本结构，它由存储事实的外延数据库、存储规则的内涵数据库和推理机构所组成，在功能上三者缺一不可。
Deductive database consists of external database that stores the facts and internal database that stores the rules and the deductive configure, it doesn't work without each other.
教务综合管理系统包括了教务管理的各项日常工作，并且因为是学校第一个大型数据库管理系统，做了大量的外延工作，主要是数据编码工作。
The educational administration management system include various daily work, and because a school is a large database management system, does a flood of outside work, code work is primary.
应用推荐