The iterator maintains the __________ of its execution in between calls, so that successive next() requests receive successive result tuples.
A. State
B. Transition
C. Rate
D. Block
Answer:A
The iterator maintains the __________ of its execution in between calls, so that successive next() requests receive successive result tuples.
A. State B. Transition C. Rate D. Block
Explanation: The function close() tells an iterator that no more tuples are required.