15. The memory device of claim 14, wherein changing the pointer to indicate a new first record in the at least one first database automatically changes the pointer to indicate a new second record in the at least one second database according to a correspondence of the new first record to the new second record in the at least one index.
14. The memory device of claim 9 further comprising a fourth memory block programmed to store a pointer identifying a first location, in the memory device, of a first current record currently selected from the first database and a second location, in the memory device, corresponding to a second current record selected from the second database.