Explanation:Aggregation is the preferred method for data aggregation in MongoDB. 6. The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.
A. finalize
B. filter
C. procedure
D. None of the mentioned
Answer:A
Explanation:Aggregation is the preferred method for data aggregation in MongoDB. 6. The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.
A. finalize B. filter C. procedure D. None of the mentioned
Explanation: The input and the output collections may be sharded. 7. _________ can return the results of a map-reduce operation as a document, or may write the results to collections.