Ontology-driven relational query formulation using the semantic and assertion capabilities of OWL-DL

Munir, K., Odeh, M. ed and McClatchey, R. (2012) Ontology-driven relational query formulation using the semantic and assertion capabilities of OWL-DL. Knowledge-Based Systems, 35. pp. 144-159. ISSN 0950-7051

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Publisher's URL: http://dx.doi.org/10.1016/j.knosys.2012.04.020

Abstract

This work investigates the extent to which domain knowledge, expressed in a domain ontology, can assist end-users in formulating relational queries that can be executed over a complex relational database. In this regard, an ontology-driven query formulation architectural framework has been devised, namely OntoQF, that implements a two-phased approach – the pre-processing and translation phases. In the pre-processing phase, a new database-to-ontology transformation approach has been synthesised where domain ontology is populated and enriched with problem domain concepts and semantic relationships specified using OWL-DL. Once domain ontology has been formulated, end-users can write sophisticated ontology-based queries that are then translated, in the translation phase, into the corresponding rela- tional query statements. In order to validate the correctness of translating single or multiple OWL-DL constructs into their corresponding relational ones, a set of test cases have been derived from the medical domain. Our results demonstrated that the OntoQF framework enriches domain ontology and its associ- ated algorithms drive the process of relational query formulation without the need to both replicate transactional data into the associated domain ontology and have knowledge of the underlying database schema.

Item Type:Article
Uncontrolled Keywords:information systems, domain knowledge, data retrieval, ontology Query formulation
Faculty/Department:Faculty of Environment and Technology > Department of Computer Science and Creative Technologies
ID Code:16926
Deposited By: Dr K. Munir
Deposited On:15 Jun 2012 11:39
Last Modified:14 Nov 2013 10:33

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