The phenomenon of uncommitted data occurs when two transactions are executed concurrently and the first transaction is rolled back after the second transaction has already accessed the uncommitted data-thus violating the isolation property of transactions.

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Uncommitted data occurs when a transaction that has made changes to data has not yet been committed and another transaction accesses that data before the first transaction is either committed or rolled back. If the first transaction is rolled back after the second transaction has accessed the uncommitted data, it violates the isolation property of transactions.

The Phenomenon of Uncommitted Data Occurs When Two Transactions Are