053-515

阿新 • • 發佈：2017-11-06

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A developer calls and reports that he accidentally dropped an important lookup table from a
production database. He needs the table to be recovered. What action would you take?
A. Initiate an incomplete recovery operation using RMAN.
B. Copy the table from a development database.
C. Advise the user to rekey the data.
D. Perform a Flashback Drop operation.

E. Perform a Flashback Recovery operation.

　　A Flashback Drop option would allow you to restore the table from the Recycle Bin.
Although A,B,and C may all be valid recovery options,they are much less desirable than
Flashback Drop.E is an invalid option altogether.

053-515

053-515

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515. Find Largest Value in Each Tree Row

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leetcode--515. Find Largest Value in Each Tree Row

largest input http code poll() pro tps pub curl 1、問題描述 You need to find the largest value in each row of a binary tree. Example: Input:

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