期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2016
卷号：5
期号：2
页码：0324-0329
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Ontology Based Data Access (OBDA) is an emerging research area to query relational databases via ontology, to which these databases are mapped. The ontology depicts the conceptual representation of the domain of interest which along with data sources and corresponding mapping allows us to translate the SPARQL queries into the data level queries and executed by the underlying database management systems. This paper uses an open source OBDA system, called Ontop which is developed by Free University of Bozen-Bolzano, for querying virtual RDF graphs with SPARQL.
