Table 1 The sizes of loaded and indexed databases
Database system | Database size (in GB) | ||
|---|---|---|---|
Directly referenced | Indirectly referenced | Native RDF | |
PostgreSQL for IDSM SPARQL engine | 123 | 84 | – |
PostgreSQL for Ontop | 119 | 80 | – |
MariaDB for Ontop | 117 | 85 | – |
Virtuoso | 138 | 96 | 27 |
GraphDB | – | – | 101 |
Blazegraph | – | – | 106 |
Jena using TDB2 | – | – | 239 |