[单选]
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 the specified time
D . to view the changes made to the EMP table for one or more rows since the specified time
E . to recover the EMP table to a point in time in the past by restoring the most recent backu

A customer has a database application that is accessed by a large number of people through a web interface from multiple remote locations. Which of the following questions will provide the information necessary to design the best performing storage solution？（） How many web servers will be connected to the database？。 Will the database be run on a Windows solution？。 How many concurrent users will be accessing the database？。 What are the types of transactions run against the database？。简述微生物的主要特征。 If you back up a database without connecting to the recovery catalog， which operations will cause the recovery catalog to be updated？（） The next time you back up the database when you are also connected to the recovery catalog and the target database。 The next time you are connected to the target database and the recovery catalog database and issue the resync command。 The next time you connect RMAN to just the recovery catalog。 The next time you connect to the recovery catalog and the target database with RMAN。 Connecting to the recovery catalog and issuing the resync all databases command。一般情况下，输电距离越大，所用的电压等级越高，其原因是（）。 You are installing Oracle Database 11g on a machine. When you run the installer， the Oracle Universal Installer（OUI） shows the message that says one of the product-specific prerequisite checks has failed：Checking available swap space requirements ...Expected result： 1512MBActual Result： 1018MB Check complete. The overall result of this check is： Failed <<<< Problem： The system does not have therequired swap space. What happens to the installation in this situation（） It can be continued.。 It resizes the swap space automatically when you proceed further.。 It can be continued， but the instance cannot be started without increasing the swap space.。 It shows a message saying one or more prerequisite checks have failed and the installation cannot proceed。

Why would you use the following FLASHBACK TABLE command？（）
FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）；

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[单选] Why would you use the following FLASHBACK TABLE command？（） FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）；

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[单选]
Why would you use the following FLASHBACK TABLE command？（）
FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）；