Question: Why does MongoDB make sure that each document has a unique id? Does this make it easier or more difficult to shard a MongoDB database?

Why does MongoDB make sure that each document has a unique id? Does this make it easier or more difficult to shard a MongoDB database? Why?

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MongoDB ensures that each document has a unique identifier ID for several reasons 1 Primary Key The unique ID serves as the primary key for the docume... View full answer

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