针对KDD（基于数据库的知识发现）主流发展中存在的典型问题提出了用知识库去 制约与驱动数据库, 并通过数据库改善知识库结构的知识发现的新思想，形成了具有双库协同机制的KDD的开放系统KDD*，从而提高了知识发现的速度、精度和认知自主性，并使知识库在结构上具备了实时维护与自我进化的能力，同时阐述了作为双库协同基础的数据库和知识库在本质上的对应关系。

This paper and paper ( Ⅱ ), aiming at the problems in the mainstream development of KDD, put forward a new academic thought that, in the knowledge discovery, the database can be restricted and deriven by the knowledge base whose structure can be in turn improved by the database. An open KDD system, KDD* , with double-base cooperating mechanism can thus be created. At the same time, the velocity, precision, and the auto-cognition of knowledge discovery can be imroved and the knowledge base is structurally equipped with the capacity of real time maintenance and to evolve by itself. This paper mainly deals with the corresponding relation between the database and knowledge base, which are the basis of double-base cooperating mechanism.