How to control unique records in mongo DB?

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P_Alexander2018-05-03 17:16:31

Java

P_Alexander, 2018-05-03 17:16:31

Hello, how to control the uniqueness of objects (entities) in the database in mongo? I can’t figure it out at all, I figured it out with KRUD operations, but with IDs, no, tell me, or skinte a tutorial of some kind. Thank you.

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