IJERT-EMS
IJERT-EMS

SQL to SPARQL Mapping for RDF querying based on a new Efficient Schema Conversion Technique


SQL to SPARQL Mapping for RDF querying based on a new Efficient Schema Conversion Technique
Authors : Larbi Alaoui, Ahmed Abatal, Khadija Alaoui, Mohamed Bahaj, Ilias Cherti
Publication Date: 07-10-2015

Authors

Author(s):  Larbi Alaoui, Ahmed Abatal, Khadija Alaoui, Mohamed Bahaj, Ilias Cherti

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 4 - Issue. 10 , October - 2015

e-ISSN:   2278-0181

Abstract

In this paper we give an algorithm for querying RDF data using SQL without conversion of RDF instances. This algorithm translates an SQL query into an equivalent SPARQL query that is to be directly executed on the RDF data and allows it for SQL users to efficiently and easily query the RDF data. The SQL queries are formulated based on the converted relational database schema that the algorithm builds from the RDF one. In this algorithm not only simple SQL queries are considered but also complex ones such as those with UNION, INTERSECT or EXCEPT expressions.

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