D2RQ - 베를린 대학서 만든 OWL 변환기(?), 오픈소스
As Semantic Web technologies are getting mature, there is a growing need for RDF applications to access the content of non-RDF, legacy databases without having to replicate the whole database into RDF. D2RQ is a declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies. The mappings allow RDF applications to access the content of huge, non-RDF databases using Semantic Web query languages like SPARQL.
http://sites.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/
Integrating relational databases with RDF/OWL
http://www.snee.com/bobdc.blog/2006/10/integrating_relational_databas.html
Mapping relational data to RDF with D2RQ
http://www.snee.com/bobdc.blog/2006/11/mapping_relational_data_to_rdf.html
As Semantic Web technologies are getting mature, there is a growing need for RDF applications to access the content of non-RDF, legacy databases without having to replicate the whole database into RDF. D2RQ is a declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies. The mappings allow RDF applications to access the content of huge, non-RDF databases using Semantic Web query languages like SPARQL.
D2RQ Architecture
Using D2RQ you can:
- query a non-RDF database using SPARQL or find(spo),
- access information in a non-RDF database using the Jena Model API or the Sesame API,
- do RDFS and OWL inferencing over the content of a non-RDF database using Jena's inference engine.
http://sites.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/
Integrating relational databases with RDF/OWL
http://www.snee.com/bobdc.blog/2006/10/integrating_relational_databas.html
Mapping relational data to RDF with D2RQ
http://www.snee.com/bobdc.blog/2006/11/mapping_relational_data_to_rdf.html
