单项选择题
You are using the backup scheduler in Enterprise Manager （EM） to schedule a backup of your database. Which type of script does the backup scheduler generate？ （）
A.SQL script
B.PL/SQL script
C.Operating System （OS） script
D.Enterprise Manager （EM） script
E.Recovery Manager （RMAN） script
相关考题
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单项选择题
You suspect unauthorized data manipulation language （DML） operations on a particular table. You want to track users who are performing the transactions and the values used in the transactions. Also， you plan to transfer these values to another table for analysis. How would you achieve this？（）
A.by using triggers
B.by using external tables
C.by using anonymous PL/SQL blocks
D.by auditing all DML operations on the table -
单项选择题
Asaresultofperformanceanalysis，youcreatedanindexontheprod_namecolumnoftheprod_dettable，whichcontainsabouttenthousandrows.Later，youupdatedaproductnameinthetable.Howdoesthischangeaffecttheindex？（）
A.A leaf will be marked as invalid.
B.An update in a leaf row takes place.
C.The index will be updated automatically at commit.
D.A leaf row in the index will be deleted and inserted.
E.The index becomes invalid when you make any updates. -
多项选择题
WhichtwostatementsaboutFlashbackQueryaretrue？（）
A.It is generated by using the redo log files.
B.It helps in row-level recovery from user errors.
C.It can be performed to recover ALTER TABLE statements
D.It fails when undo data pertaining to the transaction is overwritten.
E.The database has to be opened with the resetlogs option after performing Flashback Query.
