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043-070

原创 Linux操作系统 作者:jbymy2000 时间:2012-03-06 12:50:10 0 删除 编辑
70. Why would you use the following FLASHBACK TABLE command?
FLASHBACK TABLE emp TO TIMESTAMP ('11:45'.'hh12:mi');
A. to undo the changes made to the EMP table since the specified time
B.to restore the EMP table that was wrongly dropped from the database
C. to view the transactions that have modified the EMP table since th
e specified time
D. to view the changes made to the EMP table for one or more rows sin
ce the specified time
Answer: A
flashback table就已经是闪回操作了。

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