请教Q/A问题

bluefox444

If a database is restored using before-image dumps, where should the process be started following an interruption?\r\n\r\n    A. Before the last transaction\r\n    B. After the last transaction\r\n    C. As the first transaction after the latest checkpoint\r\n    D. As the last transaction before the latest checkpoint\r\n\r\n    The correct answer is:\r\n    A. Before the last transaction\r\n我认为是b，因为数据库的安全机制会前滚或后滚不完整的纪录，因此备份的数据应该是完整的。

scree

题中已经提到只能备份到该transaction 之前的image，所以你的image里不会包括该transaction.