Knowledge Management for Database Interoperability

The availability of multiple heterogeneous, autonomous, distributed data sources containing related information has created a need for integrated access to these information systems. Heterogeneous/multi-database systems address this issue when the component data sources are database systems. Resolution of heterogeneities for integrated access requires discovering and managing certain types of knowledge/facts. A generally accepted methodology or approach for managing this knowledge and information is lacking in research and industry. In this paper, we provide a framework for managing knowledge for interoperable access to heterogeneous database systems. The framework uses knowledge bases at the integration and component sites. Sample schemas of these knowledge bases are presented. A multi-database prototype system utilizing the techniques presented in this paper is being developed.