Data Access Example
- One may want something like:
SELECT ?a, ?b
WHERE (?x 'parent' ?a)
(?b 'brother' ?x)
- (i.e., ‘b is the uncle of a’)
- Ongoing W3C work
- First draft published in October 2004:
-
Protocol mappings (e.g., to HTTP) are also defined
- queries are often directed to large depositories
- Similar facilities already implemented in Jena, RAP,…