SparqlMap: is a SPARQL-to-SQL rewriter
SparqlMap allows the execution of a SPARQL query fully inside a relational database and does not require dumping the data first. The translation is a light weight process with low requirements on processing power. The mapping of the relational database is expressed using R2RML, the mapping language being currently standardized by a W3C working group.
Status
IMPORTANT: Please note, that we detected a bug the implementation used for bechmarking, affecting BSBM query 5. Unfortunately, a filter condition was wrongly set, resulting in an extremly short execution time. The version released here has this bug fixed. However, when comparing the performance of the flat structure SQL created by SparqlMap to the nested original BSBM-SQL, it still performs better by a factor of 2. So, except for the factor, all statements remain true.
Benchmark results
Coming soon.
Current Team
- Mohamed Sherif
- Jörg Unbehauen (Principle Contact / Maintainer)