Patent ID: 8037008

Claim:
A DBMS-based knowledge extension and inference service method recorded on a computer-readable medium comprising: creating knowledge represented as a triple by using ontology schemas and instances (first step); receiving the knowledge created in the first step and extending the knowledge by using a knowledge extension rule (second step); and providing an inference service by using the knowledge extended in the second step, converting a user query, and processing the query (third step), wherein the third step comprises: receiving and converting a user query so as to create the converted query (31st step); determining whether the query is a previously-input query (32nd step); receiving the query converted in the 31st step and the determination result of the 32nd step so as to create a query result (33rd step); receiving the query result of the 33rd step and performing post-processing so as to create a post-processing result (34th step); and creating a message and protocol suitable for a user interface by using the post-processing result created in the 34th step and then presenting an inference result.