多项选择题

You execute this command to drop the ITEM table, which has the primary key referred in the ORDERS table:SQL> DROP TABLE scott.item CASCADE CONSTRAINTS PURGE; 
Which two statements are true about theeffect of the command()

A.No flashback is possible to bring back the ITEM table.
B.The ORDERS table is dropped along with the ITEM table.
C.The dependent referential integrity constraints in the ORDERS table are disabled.
D.The dependent referential integrity constraints in the ORDERS table are removed.
E.The table definition of the ITEM table and associated indexes are placed in the recycle bin


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2.多项选择题

Which two operations can be performed on an external table()

A.Create a view on the table.
B.Create an index on the table.
C.Create a synonym on the table.
D.Add a virtual column to the table.
E.Update the table using the UPDATE statement.
F.Delete rows in the table using the DELETE command

3.单项选择题

Your database is configured in shared server mode. However, your senior DBA asks you to modify the value ofthe PRIVATE_SGA limit in the profile of the users. 
What could be the reason for this()

A.To limit the User Global Area (UGA) memory allocated to a session from the SGA
B.To limit the amount of memory to be used for the dispatcher queue of a session in SGA
C.To limit the amount of memory to be used for the request pool in System Global Area (SGA)
D.To control the amount of memory allocated in SGA for the local variables for each shared server process

4.多项选择题Which two statements correctly describe the relation between a data file and the logical database structures()

A.An extent cannot spread across data files.
B.A segment cannot spread across data files.
C.A data file can belong to only one tablespace.
D.A data file can have only one segment created in it.
E.A data block can spread across multiple data files as it can consist of multiple operating system (OS)blocks

5.多项选择题

A constraint in a table is defined with the INITIALLY IMMEDIATE clause. You executed the ALTER TABLEcommand with the ENABLE VALIDATE option to enable the constraint that was disabled. 
What are the twoeffects of this command()

A.It fails if any existing row violates the constraint.
B.It does not validate the existing data in the table.
C.It enables the constraint to be enforced at the end of each transaction.
D.It prevents insert, update, and delete operations on the table while the constraint is in the process of beingenabled

6.多项选择题

You executed the following command to create a tablespace called SALES_DATA:
SQL> CREATE TABLESPACE sales_data DATAFILE SIZE 100M SEGMENT SPACE MANAGEMENT AUTO;
Which two statements are true about the SALES_DATA tablespace()

A.The database automatically determines the extent-sizing policy for the tablespace.
B.The segments are automatically shrunk when the contents are removed from them.
C.The allocation of extents within the tablespace is managed through the dictionary tables.
D.The space utilization description of the data blocks in segments is recorded in bitmap blocks.
E.The space utilization description of the data blocks in segments is managed through free lists.

7.单项选择题

View the Exhibit and examine the user information. The user has been granted CONNECT and RESOURCEroles and no individual system privileges. The SL_REP user executes this command to create a table:SQL> CREATE TABLE orders(oid number(6), odate date, ccode number(4), oamt number(10,2))TABLESPACE purchase_space;
The PURCHASE_SPACE tablespace already exists in the database. 
Which statement describes the effect ofthe command()

A.The command executes successfully and creates the table in the USERS tablespace.
B.The command executes successfully and creates the table in the PURCHASE_SPACE tablespace.
C.The command produces an error because the user does not have the privilege to create the table.
D.The command produces an error because the user does not have quota in the PURCHASE_SPACEtablespace.

8.单项选择题You are managing an Oracle Database 11g database. You want to ensure the recovery of the database to thepoint of failure. Which configuration will you do to accomplish the task()

A.Multiplex all database files.
B.Configure the Flash Recovery Area.
C.Configure the database instance for ARCHIVELOG mode.
D.Configure the FAST_START_MTTR_TARGET initialization parameter

9.多项选择题Which statements are true regarding the creation of an incident package file by using the EM WorkbenchSupport()

A.You can add SQL test cases to the incident package.
B.You can add or remove the trace files to the package.
C.You cannot create an incremental incident package when the physical files are purged from the ADR.
D.You can create the incremental incident package ZIP file for new or modified diagnostic information for theincident package already created.

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

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