- From: Michael Brunnbauer <brunni@netestate.de>
- Date: Sun, 5 Aug 2012 03:03:49 +0200
- To: semantic-web@w3.org
- Message-ID: <20120805010349.GA21063@netestate.de>
hi all to support the proliferation of RDF, I have begun work on a tool to convert RDF data into relational databases. It is intended for people who want to use data available only as RDF but do not have the patience to install a triple store and learn SPARQL. I know there are tools that present a SQL view over a triple store but installing such an environment also is quite challenging. There has been work on real "converters" in the past, especially the paper from Wajee Teswanich and Suphamit Chittayasothorn: http://hcotuk.etu.edu.tr/semanticweb/A%20Transformation%20from%20RDF%20Documents%20and%20Schemas%20to%20Relational%20Databases.pdf My tool works much like the one described in this paper (has it ever been implemented ?), with important differences: -It supports incremental runs (adding more RDF data to a database later) -It supports entailment (rdfs:subClassOf, rdfs:subPropertyOf, rdfs:domain, rdfs:range, owl:equivalentClass, owl:equivalentProperty, owl:FunctionalProperty) The software is written in Python and uses the RDFLib Python library. It works with local and remote files. You can find more information and download it at http://www.netestate.de/De/Loesungen/RDF2RDB There also example database dumps for http://www.w3.org/People/Berners-Lee/card.rdf and http://www.w3.org/People/Berners-Lee/card.rdf + http://xmlns.com/foaf/spec/index.rdf there. Don't rant about the invalid skolem URIs - you can set the skolem URI prefix to something valid in the configuration :-) So far this has just been fun and I would like to have some feedback on the usefulness before I spend more time on it. Regards, Michael Brunnbauer -- ++ Michael Brunnbauer ++ netEstate GmbH ++ Geisenhausener Stra?e 11a ++ 81379 M?nchen ++ Tel +49 89 32 19 77 80 ++ Fax +49 89 32 19 77 89 ++ E-Mail brunni@netestate.de ++ http://www.netestate.de/ ++ ++ Sitz: M?nchen, HRB Nr.142452 (Handelsregister B M?nchen) ++ USt-IdNr. DE221033342 ++ Gesch臟tsf?hrer: Michael Brunnbauer, Franz Brunnbauer ++ Prokurist: Dipl. Kfm. (Univ.) Markus Hendel
Received on Sunday, 5 August 2012 01:04:17 UTC