Update If Correct is an approach for which of the following concepts in MongoDB:

Question

Options

• AConcurrency Control
• BAtomicity
• CPerformance Management
• DTransaction Management

• A
  82% (47)
• B
  11% (6)
• C
  5% (3)
• D
  2% (1)

Explanation

Update If Correct is a pattern for Concurrency Control (A) - it's an optimistic concurrency strategy where you read a document, attempt to update it only if the current value still matches what you read (i.e., no other process has changed it since), preventing lost updates when multiple clients write simultaneously. It doesn't address Atomicity (B), which is about an operation completing fully or not at all - MongoDB handles that natively at the single-document level without needing this pattern. Performance Management (C) covers indexing, query optimization, and resource tuning, which is unrelated. Transaction Management (D) deals with multi-document ACID transactions, a broader concept - Update If Correct operates at the single-document level to resolve race conditions, not to coordinate multi-step transaction lifecycles.

Memory tip: Think "Check before you wreck" - Update If Correct checks the current state before writing, which is the hallmark of concurrency control (specifically optimistic locking). If the value changed, your update fails and you retry - classic multi-client conflict handling.

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