27. The system of claim 26 , wherein the processor is further configured to formulate a plurality of non-equivalent queries in the course of formulating the at least one query.
27. The system of claim 26 , wherein the processor is further configured to formulate a plurality of non-equivalent queries in the course of formulating the at least one query. 29. The system of claim 27 , wherein the processor is further configured to launch the plurality of non-equivalent queries in parallel.