Efficient SPARQL-to-SQL with R2RML mappings
Journal of Web Semantics, pp. 141-169, 2015.
Existing SPARQL-to-SQL translation techniques have limitations that reduce their robustness, efficiency and dependability. These limitations include the generation of inefficient or even incorrect SQL queries, lack of formal background, and poor implementations. Moreover, some of these techniques cannot be used over arbitrary DB schemas d...More
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