Explanation:If the sort keys correspond to the index keys or an index prefix, MongoDB can use the index to sort the query results. 4. Sort operations that do not use an index will abort when they use _______ megabytes of memory.
A. 16
B. 32
C. 64
D. All of the mentioned
Answer:A
Explanation:If the sort keys correspond to the index keys or an index prefix, MongoDB can use the index to sort the query results. 4. Sort operations that do not use an index will abort when they use _______ megabytes of memory.
A. 16 B. 32 C. 64 D. All of the mentioned
Explanation:If the query planner cannot obtain the sort order from an index, it will sort the results in memory. 5. Point out the correct statement :