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2021 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
Replace 1z0-147 download:
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