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The _________ References pattern stores each tree node in array the id(s) of the node’s children.

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The _________ References pattern stores each tree node in array the id(s) of the node’s children.

(a) Child

(b) Parent

(c) Root

(d) None of the mentioned

I got this question during an online interview.

This intriguing question originated from Model Tree Structures topic in chapter Data Models of MongoDB

1 Answer

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Best answer
The correct answer is (a) Child

Explanation: In addition to the tree node, document stores in an array the id(s) of the node’s children.

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