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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. You need to implement a virtual private database (vpd). In order to have the vpd functionality, a trigger is required to fire when every user initiates a session in the database.What type of trigger needs to be created?

A) Application trigger
B) System event trigger
C) DML trigger
D) INSTEAD OF trigger

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

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

3. Examine this code:
CREATE OR REPLACE PACKAGE bonus
IS
g_max_bonus NUMBER := .99;
FUNCTION calc_bonus (p_emp_id NUMBER)
RETURN NUMBER;
FUNCTION calc_salary (p_emp_id NUMBER)
RETURN NUMBER;
END;
/
CREATE OR REPLACE PACKAGE BODY bonus
IS v_salary employees.salary%TYPE; v_bonus employees.commission_pct%TYPE; FUNCTION calc_bonus (p_emp_id NUMBER) RETURN NUMBER IS BEGIN SELECT salary, commission_pct INTO v_salary, v_bonus FROM employees WHERE employee_id = p_emp_id; RETURN v_bonus * v_salary; END calc_bonus FUNCTION calc_salary (p_emp_id NUMBER) RETURN NUMBER IS BEGIN SELECT salary, commission_pct INTO v_salary, v_bonus FROM employees WHERE employees RETURN v_bonus * v_salary + v_salary; END cacl_salary; END bonus; / Which statement is true?

A) You can call the BONUS.CALC_SALARY packaged function from an INSERT command against the EMPLOYEES table.
B) You can call the BONUS.CALC_SALARY packaged function from an UPDATE command against the EMPLOYEES table.
C) You can call the BONUS.CALC_SALARY packaged function from a SELECT command against the EMPLOYEES table.
D) You can call the BONUS.CALC_SALARY packaged function form a DELETE command against the EMPLOYEES table.

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

A) Boolean variables
B) local variables
C) arguments
D) Substitution variables

5. How can you migrate from a LONG to a LOB data type for a column?

A) Use the DBMS_LOB.MIGRATE procedure.
B) Use the UTL_MANAGE_LOMIGRATE procedure.
C) Use the ALTER TABLE command.
D) Use the DBMS_MANAGE_LOB.MIGRATE procedure.
E) You cannot migrate from a LONG to a LOB date type for a column.

Solutions: