5. The system of claim 4 , further comprising a scheduling services module operably connected to the query agent and the query server and being adapted to: schedule a time of execution of the at least one executable by the master node and slave nodes based on at least one characteristic of the at least one executable; and direct the query agent to submit the executable to the master node at the scheduled time.
5. The system of claim 4 , further comprising a scheduling services module operably connected to the query agent and the query server and being adapted to: schedule a time of execution of the at least one executable by the master node and slave nodes based on at least one characteristic of the at least one executable; and direct the query agent to submit the executable to the master node at the scheduled time. 6. The system of claim 5 , wherein the at least one characteristic of the at least one executable includes one of a group consisting of: an expected execution time of the at least one executable; a priority of the at least one executable; a type of the at least one database operation represented by the at least one executable; and a number of slave nodes expected to execute the at least one executable.