Abstract: There are stored in advance a data type, a data type definition, and a data processing procedure associated with the data type. The data type definition is developed and inputted to a compiler. An output of the compiler and the data processing procedure are inputted to a linkage editor, thereby extending an interface of the database management system.

Abstract: A knowledge base management method and system provide a knowledge base file, a system control processor, a plurality of knowledge representation analyzers provided individually for knowledge representing languages or programming languages and independently of the system control processor, and a plurality of knowledge information catalogs provided individually for the programming languages and independently of the system control processor. The knowledge representation analyzer analyzes a module of knowledge inputted thereto to extract information concerning a relation (for example, relation in inheritance) between the inputted module of knowledge and another module of knowledge. The knowledge information catalog stores the information obtained through the analysis by the knowledge representation analyzer with relation to a storage location of the corresponding module of knowledge in the knowledge base file.