You perform the following operation in the shell: db.

MongoDB C100DBA Question Answer

You perform the following operation in the shell: db.foo.insert( { } ); What gets inserted?

A document will be inserted with the same _id as the last document inserted

A document that matches the collection's existing schema, but with null fields

A document with an _id assigned to be an Objectld

An empty document

No document will be inserted; an error will be raised

C100DBA PDF/Engine

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