14. The object search machine of claim 13 , wherein the processing circuitry is constructed and arranged to receive the search criteria by being constructed and arranged to: receive a characteristic property parameter of the at least one object to be searched; receive an operator parameter to act on the characteristic property parameter; and receive a value parameter to establish a bound for the operator parameter to act on the characteristic property parameter.
14. The object search machine of claim 13 , wherein the processing circuitry is constructed and arranged to receive the search criteria by being constructed and arranged to: receive a characteristic property parameter of the at least one object to be searched; receive an operator parameter to act on the characteristic property parameter; and receive a value parameter to establish a bound for the operator parameter to act on the characteristic property parameter. 15. The object search machine of claim 14 : wherein the search criteria includes at least one selection criteria, each of the at least one selection criteria including one characteristic property parameter, one operator parameter, and one value parameter; and wherein the processing circuitry is further constructed and arranged to (i) receive a modification of the search criteria, the modification including at least one of added, deleted, and replaced selection criteria of the search criteria, and (ii) store the modified search criteria as a second persistence query having the first query format.