Recovery and Atomicity (Cont.) To ensure atomicity despite failures,we first output information describing the modifications to stable storage without modifying the database itself. We study two approaches: log-based recovery,and shadow-paging We assume (initially)that transactions run serially,that is,one after the other. Database System Concepts,5th Edition,Oct 5,2006 17.12 ©Silberschat乜，Korth and SudarshanDatabase System Concepts, 5 17.12 ©Silberschatz, Korth and Sudarshan th Edition, Oct 5, 2006 Recovery and Atomicity (Cont.) To ensure atomicity despite failures, we first output information describing the modifications to stable storage without modifying the database itself. We study two approaches: log-based recovery, and shadow-paging We assume (initially) that transactions run serially, that is, one after the other