7. The method of claim 6 , wherein the retrieved query record comprises a status indicator with a value indicative of FORCE.
7. The method of claim 6 , wherein the retrieved query record comprises a status indicator with a value indicative of FORCE. 8. The method of claim 7 , further comprising: executing the at least two different query plans on the relational database; and providing runtime statistics that include a resource cost of execution for each of the at least two different query plans.