Mapping Relational Database into RDF Graph Representation

Abstract

The Semantic Web has been developed in order to publish and access a lot of information for automatically processing of data and information by machines rather than for people. RDF (Resource Description Framework) data model is a proven technology for generating semantic data from existing relational data representation. The certain loss of semantics has occurred in the generation of relational data to RDF. This paper describes the development of the RDB to RDF mapping system, which transforms relational data into semantically structured data and publishes it on the web. The proposed mapping solution extracts relational schema and data from an existing relational database. Then, relation URI, attribute URI and tuple URI are generated. Finally, a series of triples are generated from those URI and validated against RDF validator. The implementation of the tool is made using the standard relational databases such as sakila, world and employee datasets.