| | 9 | |
| | 10 | |
| | 11 | ==DARQ == |
| | 12 | |
| | 13 | 1. The source code is temperately unavailable. |
| | 14 | |
| | 15 | 2. The project has not been updated since 2006. |
| | 16 | |
| | 17 | 3. The project announced the following limitations of DARQ system: |
| | 18 | |
| | 19 | |
| | 20 | Limitations and known issues: |
| | 21 | |
| | 22 | 1. DARQ is in an early stage of development. No extensive testing has been performed. |
| | 23 | |
| | 24 | 2. Since DARQ uses predicates to decide where to send triple patterns, no ?s ?p ?o queries are supported - predicates must be bound. |
| | 25 | |
| | 26 | 3. Joins using Blank nodes are not supported. If a join operation finds a blank node an exception will be thrown. |
| | 27 | |
| | 28 | 4. DESCRIBE is not supported. |
| | 29 | |
| | 30 | 5. GRAPH is not supported. |
| | 31 | |
| | 32 | 6. Query optimization is not very performant and will not support many endpoint or triples. #endpoints, #triples/endpoint < 7 are a good choice for the moment. |
