From: SAFE: SPARQL Federation over RDF Data Cubes with Access Control
Systems | Source selection | Join type | Code | Policy | Cache | Update |
---|---|---|---|---|---|---|
ADERIS [27] | Index | Nested loop | ✓ | ✗ | ✗ | ✗ |
ANAPSID [26] | Query & index | Adaptive | ✓ | ✗ | ✗ | ✓ |
Avalanche [24] | Query & index | Distributed, merge | ✗ | ✗ | ✓ | ✗ |
DARQ [4] | Index | Nested loop, bind | ✓ | ✗ | ✗ | ✗ |
DAW [25] | Query & index | Based on underlying system | ✗ | ✗ | ✓ | ✗ |
FedSearch [3] | Query & index | Bind, pull-based rank | ✗ | ✗ | ✓ | ✗ |
FedX [1] | Query | Nested loop, bind | ✓ | ✗ | ✓ | ✗ |
LHD [5] | Query & index | Hash, bind | ✓ | ✗ | ✗ | ✗ |
SPLENDID [2] | Query & index | Hash, bind | ✓ | ✗ | ✗ | ✗ |
HiBISCuS [14] | Query & index | Nested loop, bind | ✓ | ✗ | ✓ | ✓ |
FEDRA [6] | Query & index | Nested loop, bind | ✓ | ✗ | ✓ | ✓ |
SAFE [15] | Query & index | Nested loop, bind | ✓ | ✓ | ✓ | ✓ |