What is the difference between 'dirty read' and 'non-repeatable read' in the context of transaction isolation levels?

  • Dirty read: Reading committed data
  • Dirty read: Reading uncommitted data
  • Non-repeatable read: Reading committed data
  • Non-repeatable read: Reading uncommitted data
In the context of transaction isolation levels, a 'dirty read' occurs when a transaction reads uncommitted data from another transaction, while a 'non-repeatable read' happens when a transaction reads data committed by another transaction but the data changes before the first transaction completes. Understanding these concepts is crucial in managing data consistency and isolation in concurrent transactions.
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