User A executes the following command to drop a large table in your database： SQL> DROP TABLE trans； 
While the drop table operation is in progress， user B executes the following command on the same table： SQL> DELETE FROM trans WHERE tr_type=’SL’； 
Which statement is true regarding the DELETE command（）

单项选择题You suspect unauthorized data manipulation language （DML） operations on a particular table. Youwant to track users who are performing the transactions and the values used in the transactions. You alsoplan to transfer these values to another table for analysis.  How would you achieve this（）

A.by using triggers
B.by using Data Pump
C.by using external tables
D.by using anonymous PL/SQL blocks

多项选择题User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， or any data definition language （DDL） command： SQL> SELECT ename FROM emp  2 WHERE job=’CLERK’ FOR UPDATE OF empno；  SCOTT has opened another session to work with the database instance.  Which three operations wouldwait when issued in SCOTT’s second session（）

A.LOCK TABLE emp IN SHARE MODE；
B.LOCK TABLE emp IN EXCLUSIVE MODE；
C.UPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；
D.INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；
E.SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；

单项选择题The HR user creates a stand-alone procedure as follows and grants the EXECUTE privilege on theprocedure to many database users：  CREATE OR REPLACE PROCEDURE create_dept （ v_deptno NUMBER， v_dname VARCHAR2， v_mgr NUMBER， v_loc NUMBER） BEGIN  INSERT INTO hr.departments VALUES （v_deptno， v_dname， v_mgr， v_loc）； END；  The users having permission to execute the procedure are able to insert records into the  DEPARTMENTStable even though they do not have the INSERT privilege on the table. You want only those users whohave privileges on the DEPARTMENTS table to be able to execute the procedure successfully.  What would you suggest to the PL SQL developers to achieve this（）

A.Create the procedure with definer’s right.
B.Create the procedure with invoker’s right.
C.Grant the EXECUTE privilege with GRANT OPTION on the procedure to selected users.
D.Create the procedure as part of a PL/SQL package and grant the EXECUTE privilege on the package to selected users

单项选择题You made changes to the COMPUTE_TAX function inside the EMP_ADMIN package body.  Whichstatement is true after you recompile the EMP_ADMIN package body（）

A.The USE_P procedure remains valid.
B.The USE_P procedure becomes invalid.
C.The SHOW_DETAIL procedure becomes invalid.
D.The EMP_ADMIN package specification becomes invalid and needs to be recompiled

多项选择题User SCOTT wants to perform a bulk insert operation in the EMP_DEP table. SCOTT receives thefollowing error after the INSERT statement is issued and few rows are inserted： INSERT INTO EMP_DEP （emp_id，name，salary，dep_name，mgr_id） *  ERROR at line 1：  ORA-01653： unable to extend table SCOTT.EMP_DEP by 128 in tablespace USERS Identify two actions either of which will help you resolve this problem.（）

A.Grant the RESOURCE role to SCOTT.
B.Add data files to the USERS tablespace.
C.Grant the CREATE ANY TABLE privilege to SCOTT.
D.Increase the space for SCOTT on the USERS tablespace.
E.Increase the size of the data file associated with the USERS tablespace