Future Developments
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’)
• W3C started a standardization work in this area in 2004
• Firs draft for a spec published in October 2004:
  • “SPARQL Query Language for RDF”
  • http://www.w3.org/TR/rdf-sparql-query/
• Similar facilities already implemented in Jena, RAP,…