IKD: a knowledge-based tool for integrating a knowledge base and a database

In order to integrate a knowledge-based system (KBS) and relational database system (RDBS) more naturally and flexibly, it is necessary to work with these two systems cooperatively. The IKD system functions as an interface between the KBS and RDBS by representing their conceptual structures in frames. Two types of frames are distinguished from one another: one defines the data structure of an integrating database (DB) and the other represents conceptual objects dealing with a KBS. Several types of operations on the DB are processed based on message passing among frames.<
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