________ deconstructs an array field from the input documents to output a document for each element.
A. $unwindelem
B. $unwind
C. $unwin
D. None of the mentioned
Answer:A
________ deconstructs an array field from the input documents to output a document for each element.
A. $unwindelem B. $unwind C. $unwin D. None of the mentioned
Explanation:Each output document replaces the array with an element value. 10.Which of the following operator is related to geography of data ?