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________ deconstructs an array field from the input documents to output a document for each element.

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________ 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

The question was posed to me by my college professor while I was bunking the class.

This question is from Aggregation Operations in chapter Aggregation Concepts and Aggregation Mechanics of MongoDB

1 Answer

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Best answer
Right choice is (c) $unwin

Best explanation: Each output document replaces the array with an element value.

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