Transaction Management A transaction is a collection of operations that performs a single logical function in a database application Transaction-management component ensures that the database remains in a consistent(correct)state despite system failures(e.g., power failures and operating system crashes)and transaction failures. Concurrency-control manager controls the interaction among the concurrent transactions,to ensure the consistency of the database. Database System Concepts-7th Edition 1.27 ©Silberscha乜，Korth and SudarshanDatabase System Concepts - 7 1.27 ©Silberschatz, Korth and Sudarshan th Edition Transaction Management ▪ A transaction is a collection of operations that performs a single logical function in a database application ▪ Transaction-management component ensures that the database remains in a consistent (correct) state despite system failures (e.g., power failures and operating system crashes) and transaction failures. ▪ Concurrency-control manager controls the interaction among the concurrent transactions, to ensure the consistency of the database