An R2RML implementation that can export relational database contents as RDF graphs, based on an R2RML mapping document. Contains an R2RML mapping document for the DSpace institutional repository solution.
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R2RML implementation written fully in Java 7, using Apache Jena 2.11, Spring 4.0, JUnit 4.9, and Maven 3.1. Tested against MySQL 5.6, PostgreSQL 9.2 and Oracle 11g.
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N. Konstantinou, D. Kouis, N. Mitrou: "Incremental Export of Relational Database Contents into RDF Graphs". In 4th International Conference on Web Intelligence, Mining and Semantics (WIMS'14), Thessaloniki, Greece, June 2014 (doi:10.1145/2611040.2611082) (slides)
N. Konstantinou, D.E. Spanos, N. Houssos, N. Mitrou: "Exposing Scholarly Information as Linked Open Data: RDFizing DSpace contents". In The Electronic Library, Vol. 32, No. 6, 2014
N. Konstantinou, D.E. Spanos, N. Mitrou: "Transient and persistent RDF views over relational databases in the context of digital repositories". In 7th Metadata and Semantics Research Conference (MTSR'13), Thessaloniki, Greece, Springer, CCIS 390, pp. 342-354, November 2013 (doi:10.1007/978-3-319-03437-9_33) (slides)
N. Konstantinou, N. Houssos, A. Manta: "Exposing Bibliographic Information as Linked Open Data using Standards-based Mappings: Methodology and Results". In 3rd International Conference on Integrated Information (IC-ININFO'13), Prague, Czech Republic, September 2013 (slides)