5. The computer-implemented method of claim 1 where the storing of triples in the source table is performed by: mapping triple component identifiers associated with triples in the set of triples to a set of respective compact identifiers, where each compact identifier requires less storage space than a triple component identifier that requires the most storage space; and storing the compact identifiers in the source table.
5. The computer-implemented method of claim 1 where the storing of triples in the source table is performed by: mapping triple component identifiers associated with triples in the set of triples to a set of respective compact identifiers, where each compact identifier requires less storage space than a triple component identifier that requires the most storage space; and storing the compact identifiers in the source table. 7. The computer-implemented method of claim 5 comprising determining a minimum column width necessary to store a largest of the compact identifiers and storing the compact identifiers in a source table having the determined column width.