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All you need to convert relational databases (RDB) to RDF in a declarative & fully automated way.

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Template for Mapping from MySQL to RDF Triples using XRM

Use this repo as template to set up a project-specific mapping project.

This repository is structured as a full example showing how Zazuko Expressive RDF Mapper (XRM) can be used together with Ontop to generate triples out of a MySQL database. See our product page and the documentation for editing instructions.

For this example, we will use a basic example database from the R2RML W3C Recommendation.

Using the Expressive RDF Mapper Eclipse plugin or the VS Code extension, the project will automatically write the mapping to ./src-gen.

Prerequisites

Repository Structure

  • Makefile

    $ make runs all targets:

    • $ make sql to start the MySQL database with the example-database.sql data.
    • $ make convert to 'apply' the r2rml mapping generated by XRM to the MySQL database, resulting in ontop-scripts/triples.nt N-Triples file.
  • database/

    MySQL database related files and config.

  • mapping/

    R2RML mappings used to convert the MySQL database content into triples. The R2RML mappings are generated using the expressive-rdf-mapper.

  • ontop-scripts/

    Scripts used to create triples from the MySQL database, using the R2RML mappings.

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All you need to convert relational databases (RDB) to RDF in a declarative & fully automated way.

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