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Ecient Inference-aware RDB2RDF Query Rewriting
Mora, Jose and Corcho, Oscar
Ecient Inference-aware RDB2RDF Query Rewriting.
Monografía (Working Paper).
Facultad de Informática (UPM).
RDB2RDF systems generate RDF from relational databases,
operating in two dierent manners: materializing the database content into RDF or acting as virtual RDF datastores that transform SPARQL queries into SQL. In the former, inferences on the RDF data (taking into account the ontologies that they are related to) are normally done by the RDF triple store where the RDF data is materialised and hence the
results of the query answering process depend on the store. In the latter, existing RDB2RDF systems do not normally perform such inferences at query time. This paper shows how the algorithm used in the REQUIEM system, focused on handling run-time inferences for query answering, can
be adapted to handle such inferences for query answering in combination with RDB2RDF systems.
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