Answer / Vivek Srivastava

{"transaction": "In EJB, a transaction is a sequence of operations that are executed as a single unit of work. Transactions provide an all-or-nothing guarantee, meaning either all the operations within a transaction are committed or none of them are.","methods": "EJB provides several methods to manage transactions such as @TransactionAttribute for specifying transaction attributes for individual methods, and UserTransaction interface for programmatic control of transactions."}

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