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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. Examine this package:
CREATE OR REPLACE PACKAGE manage_emps IS tax_rate CONSTANT NUMBER(5,2) := .28; v_id NUMBER; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER); PROCEDURE delete_emp; PROCEDURE update_emp; FUNCTION calc_tax (p_sal NUMBER) RETURN NUMBER; END manage_emps; / CREATE OR REPLACE PACKAGE BODY manage_emps IS PROCEDURE update_sal (p_raise_amt NUMBER) IS BEGIN UPDATE emp SET sal = (sal * p_raise_emt) + sal WHERE empno = v_id; END; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER) IS BEGIN INSERT INTO emp(empno, deptno, sal) VALYES(v_id, p_depntno, p_sal); END insert_emp; PROCEDURE delete_emp IS BEGIN DELETE FROM emp WHERE empno = v_id; END delete_emp; PROCEDURE update_emp IS v_sal NUMBER(10, 2); v_raise NUMBER(10, 2); BEGIN SELECT sal INTO v_sal FROM emp WHERE empno = v_id;
IF v_sal < 500 THEN
v_raise := .05;
ELSIP v_sal < 1000 THEN
v_raise := .07;
ELSE
v_raise := .04;
END IF;
update_sal(v_raise);
END update_emp;
FUNCTION calc_tax
(p_sal NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_sal * tax_rate;
END calc_tax;
END manage_emps;
/
What is the name of the private procedure in this package?

A) CALC_TAX
B) MANAGE_EMPS
C) UPDATE_EMP
D) INSERT_EMP
E) UPDATE_SAL
F) DELETE_EMP

2. Which two statements are true about LOBs? (Choose two.)

A) The Oracle9i server performs implicit conversions between CLOBs and VARCHAR2 data types
B) NCLOB represents a multi-byte character object
C) All LOBs have read and write access
D) The Oracle9i server performs implicit conversions between BLOBs and NUMBER data types
E) BFILES are stored in the database

3. Which three statements are true regarding database triggers? (Choose three)

A) A database trigger fires whenever a data event (such as DML) or system event (such as logon, shutdown) occurs on a schema or database.
B) With a schema, triggers fire for each event for all users; with a database, triggers fire for each event for that specific user.
C) A database trigger needs to be executed explicitly whenever a particular event takes place.
D) A database trigger is a PL/SQL block, C, or Java procedure associated with a table, view, schema, or the database.
E) A database trigger executes implicitly whenever a particular event takes place.

4. Examine this code:
CREATE OR REPLACE PACKAGE metric_converter
IS
c_height CONSTRAINT NUMBER := 2.54;
c_weight CONSTRAINT NUMBER := .454;
FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER;
FUNCTION calc_weight (p_weight_in_pounds NUMBER)
RETURN NUMBER;
END;
/
CREATE OR REPLACE PACKAGE BODY metric_converter
IS
FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_height_in_inches * c_height;
END calc_height;
FUNCTION calc_weight (p_weight_in_pounds NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_weight_in_pounds * c_weight
END calc_weight
END metric_converter;
/
CREATE OR REPLACE FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_height_in_inches * metric_converter.c_height;
END calc_height;
/
Which statement is true?

A) If you remove the package specification, then the package body and the stand alone stored function CALC_HEIGHT are removed.
B) The stand alone function CALC_HEIGHT cannot be created because its name is used in a packaged function.
C) If you remove the stand alone stored function CALC_HEIGHT, then the METRIC_CONVERTER package body and the package specification are removed.
D) If you remove the package body, then the package specification is removed.
E) If you remove the package specification, then the package body is removed.
F) If you remove the package body, then the package specification and the stand alone stored function CALC_HEIGHT are removed.

5. Examine this code:
CREATE OR REPLACE PROCEDURE audit_emp
(p_id IN emp_empno%TYPE)
IS
v_id NUMBER;
PROCEDURE log_exec
IS
BEGIN
INSERT INTO log_table (user_id, log_delete)
VALUES (USER, SYSDATE);
END log_exec;
v_name VARCHAR2(20);
BEGIN
DELETE FROM emp
WHERE empno = p_id;
log_exec;
SELECT ename, empno
INTO v_name, v_id
FROM emp
WHERE empno = p_id;
END audit_emp;
Why does this code cause an error when compiled?

A) Variable v_name should be declared before declaring the LOG_EXEC procedure.
B) An insert statement is not allowed in a subprogram declaration.
C) The LOG_EXEC procedure should be invoked as EXECUTE log_exec with the AUDIT_EMP procedure.
D) Procedure LOG_EXEC should be declared before any identifiers.

Solutions: