Recall & Review
beginner
What does the
updateMany method do in MongoDB?It updates all documents in a collection that match a given filter with the specified changes.
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beginner
What are the two main arguments of the
updateMany method?The first argument is the filter to select documents, and the second is the update operation to apply.
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intermediate
How do you use
$set with updateMany?You use
$set in the update argument to change or add fields in all matched documents.Click to reveal answer
intermediate
What does
updateMany return after execution?It returns an object with details like how many documents matched and how many were modified.
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beginner
Can
updateMany update documents if no documents match the filter?No, if no documents match, no updates happen and the modified count is zero.
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What does
updateMany do in MongoDB?✗ Incorrect
updateMany updates all documents that match the filter criteria.
Which operator is commonly used with
updateMany to change field values?✗ Incorrect
$set changes or adds fields in matched documents.
What happens if no documents match the filter in
updateMany?✗ Incorrect
If no documents match, updateMany updates nothing.
What does the result of
updateMany include?✗ Incorrect
The result shows how many documents matched and how many were modified.
Which of these is a valid
updateMany call?✗ Incorrect
updateMany requires a filter and an update operation.
Explain how the
updateMany method works in MongoDB and when you would use it.Think about changing many records at once instead of one.
You got /4 concepts.
Describe the difference between
updateOne and updateMany methods.Focus on how many documents each method affects.
You got /4 concepts.