A two-level deductive database system has bean designed and implemented in their department.
本文设计并实现了一个二级推理数据库系统。
Two-level deductive database system is the amalgamation of conventional database and PROLOG system, which is divided into two levels: database level and inference level.
二级演绎数据库系统是一种结合一般数据库系统与PROLOG系统特点的演绎数据库系统，它分为数据库级和推理级两个不同的层次。
The two-level deductive database is the amalgamation of a conventional database system and a PROLOG system, which is divided into two levels, the database level and the logic program level.
二级推理数据库是传统的数据库系统和PROLOG系统的结合，它可分为二级：数据库级及逻辑程序级。
The design of DOOL, the language of the deductive object database, and the implementation of the prototype system based on DOOL are the keys of this diesis.
演绎对象库语言dool的设计与基于DOOL的原型系统的实现是本文的关键。
The design of DOOL, the language of the deductive object database, and the implementation of the prototype system based on DOOL are the keys of this diesis.
演绎对象库语言dool的设计与基于DOOL的原型系统的实现是本文的关键。
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