For most aggregation operations, the ______ Pipeline provides better performance and more coherent interface.
A. Aggregate
B. Replication
C. Sharding
D. None of the mentioned
Answer:A
For most aggregation operations, the ______ Pipeline provides better performance and more coherent interface.
A. Aggregate B. Replication C. Sharding D. None of the mentioned
Explanation:Map-reduce operations provide some flexibility that is not presently available in the aggregation pipeline. 10.What would be the maximum document size for results of mapreduce operation ?