514.A user performs an update on a table. Shortly after committing the transaction, they realize that they
had an error in their WHERE clause causing the wrong rows to be updated. Which Flashback option
would allow you to undo this transaction and restore the table to its previous state?
A. Flashback Drop
B. Flashback Query
C. Flashback Versions Query
D. Flashback Transaction Query
E. Flashback Table
Answer: E
答案解析：
参考：http://blog.csdn.net/rlhua/article/details/12404577
针对使用了错误的where子句进行更新，使用闪回表就可以了。
