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DISCLAIMER: This software is no longer maintained, although still operational. If you are interested in a materialisation engine instead of a query rewriting engine, you can make use of Morph-KGC

Morph-RDB

Morph-RDB (formerly called ODEMapster) is an RDB2RDF engine developed by the Ontology Engineering Group, that follows the R2RML specification (http://www.w3.org/TR/r2rml/).

Morph-RDB supports two operational modes: data upgrade (generating RDF instances from data in a relational database) and query translation (SPARQL to SQL). Morph-RDB employs various optimisation techniques in order to generate efficient SQL queries, such as self-join elimination and subquery elimination.

Morph-RDB has been tested with real queries from various Spanish/EU projects and has proven to work faster than other state-of-the-art tools available. At the moment, Morph-RDB works with MySQL, PostgreSQL, H2, CSV files and MonetDB.

<p align="center"> <img src="https://raw.githubusercontent.com/oeg-upm/morph-rdb/master/morph-examples/architecture.png"> </p>

How to use

User guides: For those who want to use this project on an user level, you can find a little guide to on the main branch wiki : https://github.com/oeg-upm/morph-rdb/wiki

If, on the other hand, you want to edit the project or at least work from an IDE such as Eclipse, we suggest you to follow this steps:

Acknowledgement

From January 2016 to January 2018, the development of morph-RDB has been supported by the Mobile Age project (http://www.mobile-age.eu/). After that period, the development has been supported by the Datos 4.0 Spanish national proect.

Authors