单项选择题

A.The table created by SKD is not accessible and SKD ca……

Examine the following steps performed on a database instance：
1. The DBA grants the CREATE TABLE system privilege to the SKD user with ADMIN OPTION.
2. The SKD user creates a table.
3. The SKD user grants the CREATE TABLE system privilege to the HR user.
4. The HR user creates a table.
5. The DBA revokes the CREATE TABLE system privilege from SKD.
Which statement is true after step 5 isperformed（）

A.The table created by SKD is not accessible and SKD cannot create new tables.
B.The tables created by SKD and HR remain， but both cannot create new tables.
C.The table created by HR remains and HR still has the CREATE TABLE system privilege.
D.The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.

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多项选择题YouaremanaginganOracleDatabase11gdatabasewiththefollowingbackupstrategy：1）OnSunday，anincrementallevel0tapebackupisperformed.2）MondaythroughSaturday，acumulativeincrementallevel1tapebackupisperformed.Whichtwostatementsaretrueregardingthebackupsperformed（）

A.The backup performed in step 1 backs up all blocks that have ever been in use in the database.
B.The backup performed in step 2 copies all the blocks changed since the most recent level 0 backup.
C.The backup performed in step 1 backs up all the blocks changed since the most recent level 1 backup.
D.The backup performed in step 2 backs up all blocks that have changed since the most recent incrementalbackup at level 1

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C.Automatic checkpoint tuning will be disabled.
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C.The user cannot use the role until the DBA enables it explicitly.
D.The user can start using the role immediately without any changes

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B.The database must be shut down to accomplish the backup.
C.The backup can be accomplished without shutting down the database.
D.The backup will contain all database files that have never been backed up