Explanation:The map function emits key-value pairs. 4. MongoDB applies the _________ phase, which collects and condenses the aggregated data.
A. map
B. reduce
C. mapper
D. All of the mentioned
Answer:A
Explanation:The map function emits key-value pairs. 4. MongoDB applies the _________ phase, which collects and condenses the aggregated data.
A. map B. reduce C. mapper D. All of the mentioned
Explanation:MongoDB then stores the results in a collection. 5. Point out the wrong statement :