Which option can be used with update command so that a new document gets created if no matching document is found based on the query condition?

Question

Options

• Aupsert command instead of update command
• B{update: true, insert: true} as the third parameter of update command
• CThis has to be handled in application code (Node.js, PHP, JAVA, C#, etc.) and cannot be handled in
• DSpecify {upsert : true } as the third parameter of update command

• B
  7% (2)
• C
  3% (1)
• D
  90% (27)

Explanation

Passing { upsert: true } as the third parameter to MongoDB's update() command tells the database engine to insert a new document when no existing document matches the query - this is built-in MongoDB behavior, no extra tooling required. Option A is wrong because upsert is not a separate command; it's an option flag on the existing update() command. Option B is wrong because MongoDB does not recognize { update: true, insert: true } as valid syntax - that object is simply made up. Option C is wrong because this logic is handled natively by the database driver, not by application-layer code. Memory tip: Think of "upsert" as a portmanteau of update + insert - when you set { upsert: true }, MongoDB either updates what it finds or inserts what it doesn't.

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