Abstract
Ontology as a knowledge base can provide different reasoning tasks, e.g. to check consistency of the ontology or to check whether a is instance of concept C or not. In this paper we want to focus on retrieval problem.
There already exist systems resolving this problem, but they are not effective within large datasets. Our idea is to transform ontology into a relational database.
We present particular algorithms of this transformation both on the scheme level and database level. Then we concentrate on a prototype implementation of the algorithms in a system called TORQue (Translation of Ontology Retrieval Problem into Relational Queries).
TORQue uses RDBMS MySQL as the implementation environment.