https://morenews.blogspot.com/2004/06/d2rq.html
More News: D2RQ
D2RQ - Treating Non-RDF Databases as Virtual RDF Graphs "Using D2RQ you can: * access information in a non-RDF database using the Jena m...
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https://lists.w3.org/Archives/Public/www-archive/2009Jan/0007.html
PHP D2RQ/R2D2 from Dan Brickley on 2009-01-15 (www-archive@w3.org from January 2009)
https://lists.w3.org/Archives/Public/www-archive/2009Jan/0008.html
Re: PHP D2RQ/R2D2 from Alexandre Passant on 2009-01-15 (www-archive@w3.org from January 2009)