W3C home > Mailing lists > Public > public-rww@w3.org > August 2012

Fwd: RDF2RDB 0.5

From: Melvin Carvalho <melvincarvalho@gmail.com>
Date: Sun, 5 Aug 2012 14:15:48 +0200
Message-ID: <CAKaEYh+jeEUAgrLQtjdOX1zw0pZiK=AW0FdTHphhzw9xb7EOcg@mail.gmail.com>
To: public-rww <public-rww@w3.org>
FYI ... a useful tool for people that like to work with relational
databases such as MySQL etc.

---------- Forwarded message ----------
From: Michael Brunnbauer <brunni@netestate.de>
Date: 5 August 2012 03:03
Subject: RDF2RDB 0.5
To: semantic-web@w3.org

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
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

There has been work on real "converters" in the past, especially the paper
Wajee Teswanich and Suphamit Chittayasothorn:


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,

The software is written in Python and uses the RDFLib Python library. It
with local and remote files. You can find more information and download it


There also example database dumps for





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.


Michael Brunnbauer

++  Michael Brunnbauer
++  netEstate GmbH
++  Geisenhausener Straße 11a
++  81379 München
++  Tel +49 89 32 19 77 80
++  Fax +49 89 32 19 77 89
++  E-Mail brunni@netestate.de
++  http://www.netestate.de/
++  Sitz: München, HRB Nr.142452 (Handelsregister B München)
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++  Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer
++  Prokurist: Dipl. Kfm. (Univ.) Markus Hendel
Received on Sunday, 5 August 2012 12:16:17 UTC

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