A general framework is given for achieving interoperability between two database languages based respectively on a rule-based and an object-oriented paradigm. Interoperability is obtained, offering at the language level two primitives which allow making 'visible' a portion of the schema and the corresponding data from one paradigm to another. These primitives are supported by the extensible knowledge base management system which is under development in the ESPRIT-II project STRETCH.
展开▼
