單項選擇題

You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）

A. Only the Flashback Table
B. Both the Flashback Transaction Query and the Flashback Version Query
C. Only the Flashback Drop
D. Only the Flashback Version

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單項選擇題

In which scenario will you use the Flashback Transaction Query feature？（）

A. when you want to restore an important table that is dropped from the Recycle Bin
B. when you want to obtain the SQL statements to undo the deletion of some important records from a table by a transaction
C.when you want to restore a dropped user’s schema
D. when a row of a table is updated many times within a specific time period and you want all the versions of the row in the specified time period

單項選擇題

You query the ORDERS table and discover that order number 1101 is missing. One of your reports， generated at 5：00 A.M. on April 23， 2005 using Oracle Reports， includes this order number in the output. You have inserted 100 new orders into the ORDERS table since generating this report. Which flashback technology would you use to recover order number 1101 into the ORDERS table without losing the 100 orders that you added after the report was generated？（）

A. Flashback Table
B. Flashback Query
C.Flashback Version Query
D. Flashback Transaction Query

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In which scenario will you use the Flashback Transaction Query feature？（）

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