Answer
MongoDB transactions allow multi-document ACID operations, needed when updating related data across collections.
Quick Answer
MongoDB transactions provide ACID guarantees across multiple documents and collections (since MongoDB 4.0 for replica sets, 4.2 for sharded clusters). Use when you need to update multiple documents atomically - e.g., transfer money between two accounts. Transactions have performance overhead - they hold locks and use snapshot isolation. Design schemas to minimize transaction needs.
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SugharaIQ Editorial Team
Verified Answer
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Source: SugharaIQ