Explanation:Map-reduce operations take the documents of a single collection as the input and can perform any arbitrary sorting and limiting before beginning the map stage. 8. Map-reduce uses custom __________ functions to perform the map and reduce operations
A. Java
B. Javascript
C. JSON
D. None of the mentioned
Answer:A
Explanation:Map-reduce operations take the documents of a single collection as the input and can perform any arbitrary sorting and limiting before beginning the map stage. 8. Map-reduce uses custom __________ functions to perform the map and reduce operations
A. Java B. Javascript C. JSON D. None of the mentioned
Explanation: JavaScript provide great flexibility compared to the aggregation pipeline.