Table 3 Summary of query characteristics
From: SAFE: SPARQL Federation over RDF Data Cubes with Access Control
Characteristics | QE-1 | QE-2 | QE-3 | QE-4 | QE-5 | QE-6 | QE-7 | QE-8 | QE-9 | QE-10 | QL-1 | QL-2 | QL-3 | QL-4 | QL-5 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
â„– of Patterns | 9 | 8 | 10 | 16 | 11 | 10 | 12 | 9 | 7 | 11 | 6 | 6 | 3 | 7 | 5 | |
â„– of Sources | 3 | 4 | 4 | 3 | 4 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
â„– of Results | 41 | 1 | 10 | 41 | 64 | 22208 | 5 | 10 | 108779 | 4380 | 1701 | 17199 | 760 | 39312 | 10 | |
Filters | ✓ | ✓ | ✓ | |||||||||||||
>9 pattens | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||||||||
Negation | ✓ | |||||||||||||||
LIMIT modifier | ✓ | ✓ | ✓ | ✓ | ||||||||||||
ORDER BY modifier | ✓ | ✓ | ||||||||||||||
DISTINCT modifier | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||||
REGEX operator | ✓ | ✓ | ||||||||||||||
UNION operator | ✓ | ✓ |