Morph-CSV is an open source tool for querying tabular data sources using SPARQL. It exploits the information from the query, RML+FnO mappings and CSVW metadata to enhance the performance and completeness of traditional OBDA systems (SPARQL-to-SQL translators). At this moment can be embedded in the top of any R2RML-compliant system at it has been tested over different benchmarks such as BSBM, Madrid-GTFS-Bench but also over real-use cases such as querying the original data sources of the Bio2RDF project using different SPARQL-to-SQL engines such as Morph-RDB or Ontop.
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