A practical approach to knowledge representation and reasoning in relational databases

Describes a practicable approach to extend relational databases to deductive databases by using a two-level knowledge representation mechanism. By this approach, we developed a deductive database add-in module that can be easily integrated with relational databases. Therefore, users can get deductive reasoning functionality without changing their favourite relational databases and query languages. This approach proved to be efficient on knowledge base organization and reasoning in real-world applications.