Explanation:In the mongo shell, when you assign the cursor returned from the find() method to a variable using the var keyword, the cursor does not automatically iterate. 4. Which of the following provides similar functionality to join ?
A. $unwindelem
B. $unwind
C. $unwin
D. None of the mentioned
Answer:A
Explanation:In the mongo shell, when you assign the cursor returned from the find() method to a variable using the var keyword, the cursor does not automatically iterate. 4. Which of the following provides similar functionality to join ?
A. $unwindelem B. $unwind C. $unwin D. None of the mentioned
Explanation:$unwind operator allows for somewhat similar functionality like join, but with fields embedded within the document. 5. Point out the wrong statement :