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What mechanisms and policies do RDBMS systems employ to manage data concurrency and isolation in multi-user environments, including techniques such as locking, timestamp-based concurrency control,

  1. What mechanisms and policies do RDBMS systems employ to manage data concurrency and isolation in multi-user environments, including techniques such as locking, timestamp-based concurrency control, optimistic concurrency control, and multi-version concurrency control (MVCC) ?

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