OCP换题库了，052最新考题及答案整理-第11题
Posted
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了OCP换题库了，052最新考题及答案整理-第11题相关的知识，希望对你有一定的参考价值。
11、Which three are true about UNDO data?
A) It is used to roll back failed transactions.
B) It is used to rewind a database by using FLASHBACK DATABASE.
C) It is used to recover dropped tables by using FLASHBACK TABLE … TO BEFORE DROP.
D) It is used to enable ROLLBACK statements to roll back uncommitted updates.
E) It is used to provide read consistency.
F) It is used during online backups to guarantee their consistency.
Answer:ADE
以上是关于OCP换题库了，052最新考题及答案整理-第11题的主要内容，如果未能解决你的问题，请参考以下文章
OCP|052OCP题库更新，052最新考题及答案整理-第10题