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2016 Jun 1z0-147 sample question

Q71. Which statement about triggers is true?

A. You use an application trigger to fire when a DELETE statement occurs.

B. You use a database trigger to fire when an INSERT statement occurs.

C. You use a system event trigger to fire when an UPDATE statement occurs.

D. You use INSTEAD OF trigger to fire when a SELECT statement occurs.

Answer: BD


Q72. When creating stored procedures and functions, which construct allows you to transfer values to and from the calling environment?

A. local variables

B. arguments

C. Boolean variables

D. Substitution variables

Answer: B


Q73. You create a DML trigger. For the timing information, which are valid with a DML trigger?

A. DURING

B. IN PLACE OF

C. ON SHUTDOWN

D. BEFORE

E. ON STATEMENT EXECUTION

Answer: D


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Q74. Why do you use an INSTEAD OF trigger?

A. To perform clean up actions when ending a user session.

B. To insert data into a view that normally does not accept inserts.

C. To insert into an audit table when data is updated in a sensitive column.

D. To modify data in which the DML statement has been issued against an inherently nonupdateable view.

Answer: D


Q75. You need to disable all triggers on the EMPLOYEES table.Which command accomplishes this?

A. None of these commands; you cannot disable multiple triggers on a table in one command.

B. ALTER TRIGGERS ON TABLE employees DISABLE;

C. ALTER employees DISABLE ALL TRIGGERS;

D. ALTER TABLE employees DISABLE ALL TRIGGERS;

Answer: D


Q76. Examine this code

CREATE OR REPLACE FUNCTION change_dept

(p_old_id NUMBER, p_deptname VARCHAR2)

RETURN NUMBER

IS

V_new_id NUMBER;

BEGIN

SELECT departments_seq.nextval

INTO v_new_id

FROM dual;

UPDATE departments

SET departmenet_id = v_new_id,

Department_name = p_deptname

WHERE department_id = p_old_id;

Return v_new_id;

END;

/

There are no foreign key integrity constraints on the EMPLOYEES and DEPARTMENTS tables.

Which statement performs a successful update to the EMPLOYEES table?

A. UPDATE departments

SET department_id = change_dept(10, 'Finance')

Where department_id = 10;

B. UPDATE employees

SET department_id = change_dept(10, 'Finance')

Where department_id = 10;

C. UPDATE departments

change_dept(270, 'Outsource')

Where department_name = 'payroll'

D. UPDATE employees

SET department_id = change_dept(10, 'Finance')

Where department_id = DEPARTMENTS:CURRVAL;

Answer: B


Q77. Examine this package:

CREATE OR REPLACE PACKAGE BB_PACK

IS

V_MAX_TEAM_SALARY NUMBER(12,2);

PROCEDURE ADD_PLAYER(V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY

NUMBER);

END BB_PACK;

/

CREATE OR REPLACE PACKAGE BODY BB_PACK

IS

V_PLAYER_AVG NUMBER(4,3);

PROCEDURE UPD_PLAYER_STAT

V_ID IN NUMBER, V_AB IN NUMBER DEFAULT 4, V_HITS IN NUMBER)

IS

BEGIN

UPDATE PLAYER_BAT_STAT

SET AT_BATS = AT_BATS + V_AB,

HITS = HITS + V_HITS

WHERE PLAYER_ID = V_ID;

COMMIT;

VALIDATE_PLAYER_STAT(V_ID);

END UPD_PLAYER_STAT;

PROCEDURE ADD_PLAYER

(V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER)

IS

BEGIN

INSERT INTO PLAYER(ID,LAST_NAME,SALARY)

VALUES (V_ID, V_LAST_NAME, V_SALARY);

UPD_PLAYER_STAT(V_ID,0,0);

END ADD_PLAYER;

END BB_PACK

/

Which statement will successfully assign .333 to the V_PLAYER_AVG variable from a procedure outside the package?

A. V_PLAYER_AVG := .333;

B. BB_PACK.UPD_PLAYER_STAT.V_PLAYER_AVG := .333;

C. BB_PACK.V_PLAYER_AVG := .333;

D. This variable cannot be assigned a value from outside of the package.

Answer: D