Which operations add new documents to a collection?

Insert (C) is the operation that adds new documents to a collection. The insert command (and its variants like insertOne and insertMany in MongoDB) creates and stores one or more new documents in a collection. Why the others are wrong: Update (B) modifies existing documents alrea

MongoDB Fundamentals

Question

Options

Bupdate
Cinsert
Ddelete

Explanation

Insert (C) is the operation that adds new documents to a collection. The insert command (and its variants like insertOne and insertMany in MongoDB) creates and stores one or more new documents in a collection.

Why the others are wrong:

Update (B) modifies existing documents already in the collection - it changes field values but does not create a new document unless used with an "upsert" option.
Delete (D) removes existing documents from a collection - the opposite of adding.

Memory tip: Think of the word "insert" literally - you are inserting a brand-new document into the collection, like inserting a new row into a table. If it doesn't exist yet, only insert puts it there from scratch.

Topics

#insert#upsert#CRUD operations#document creation

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