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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. You want to create a PL/SQL block of code that calculates discounts on customer orders. -This code will be invoked from several places, but only within the program unit ORDERTOTAL. What is the most appropriate location to store the code that calculates the discounts?

A) A block of code in the body of the program unit ORDERTOTAL.
B) A standalone procedure on the client machine.
C) A local subprogram defined within the program unit ORDERTOTAL.
D) A stored procedure on the server.
E) A block of code in a PL/SQL library.

2. What can you do with the DBMS_LOB package?

A) Use the DBMS_LOB.FILEEXISTS function to find the location of a BFILE.
B) Use the DBMS_LOBFILENAME function to locate an external BFILE.
C) Use the DBMS_LOB.WRITE procedure to write data to a BFILE.
D) Use the DBMS_LOB.FILECLOSE procedure to close the file being accessed.

3. Which code successfully calculates tax?

A) CREATE OR REPLACE FUNCTION calctax (p_no NUMBER)
RETURN NUMBER IS
v_sal NUMBER;
BEGIN
SELECT sal INTO v_sal
FROM emp
WHERE empno = p_no;
RETURN (v_sal * 0.05);
END;
B) CREATE OR REPLACE FUNCTION calctax (p_no NUMBER)
RETURN NUMBER IS
v_sal NUMBER;
tax NUMBER;
BEGIN SELECT sal INTO v_sal FROM emp WHERE empno = p_no; tax := v_sal * 0.05; END
C) CREATE OR REPLACE FUNCTION calctax (p_no NUMBER) IS
v_sal NUMBER;
tax NUMBER;
BEGIN
SELECT sal INTO v_sal
FROM emp
WHERE empno = p_no;
tax := v_sal * 0.05;
RETURN (tax);
END;
D) CREATE OR REPLACE PROCEDURE calctax (p_no IN NUMBER)
RETURN tax IS
v_sal NUMBER;
tax Number;
BEGIN
SELECT sal INTO v_sal
FROM emp
WHERE empno = p_no;
tax := v_sal * 0.05;
END;

4. To be callable from a SQL expression, a user-defined function must do what?

A) Use the positional notation for parameters.
B) Return a BOOLEAN or VARCHAR2 data type.
C) Be stored only in the database.
D) Have both IN and OUT parameters.

5. Examine the trigger heading:
CREATE OR REPLACE TRIGGER salary_check BEFORE UPDATE OF sal, job ON emp FOR EACH ROW
Under which condition does this trigger fire?

A) When the value of the SAL or JOB column in a row is updated in the EMP table.
B) When a row is inserted into the EMP table.
C) Only when both values of the SAL and JOB columns in a row are updated together in the EMP table.
D) When any column other than the SAL and JOB columns in a row are updated in the EMP table.

Solutions: