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Oracle9i program with pl/sql Sample Questions:

1. 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 form a DELETE command against the EMPLOYEES table.
D) You can call the BONUS.CALC_SALARY packaged function from a SELECT command against the EMPLOYEES table.

2. You have a row level BEFORE UPDATE trigger on the EMP table. This trigger contains a SELECT statement on the EMP table to ensure that the new salary value falls within the minimum and maximum salary for a given job title.
What happens when you try to update a salary value in the EMP table?

A) The trigger fails because you cannot use the minimum and maximum functions in a BEFORE UPDATE trigger.
B) The trigger fires successfully.
C) The trigger fails because a SELECT statement on the table being updated is not allowed.
D) The trigger fails because it needs to be a row level AFTER UPDATE trigger.

3. Which table should you query to determine when your procedure was last compiled?

A) USER_PROCEDURES
B) USER_PLSQL_UNITS
C) USER_PROCS
D) USER_OBJECTS

4. Examine this code:
CREATE OR REPLACE PRODECURE add_dept (p_dept_name VARCHAR2 DEFAULT 'placeholder', p_location VARCHAR2 DEFAULT 'Boston')
IS BEGIN INSERT INTO departments VALUES (dept_id_seq.NEXTVAL, p_dept_name, p_location); END add_dept; /
Which three are valid calls to the add_dep procedure? (Choose three)

A) add_dept(p_location=>'New York');
B) add_dept(, 'New York');
C) add_dept;
D) add_dept('Accounting');

5. Examine this code:
CREATE OR REPLACE FUNCTION gen_email_name
(p_first VARCHAR2, p_last VARCHAR2)
RETURN VARCHAR2
IS
v_email_name VARCHAR (19) ;
BEGIN
v_email_bame := SUBSTR(p_first, 1, 1) ||
SUBSTR(p_last, 1, 7) ||
RETURN v_email_name;
END;
/
Which two statements are true? Select two.

A) This function is invalid.
B) This function will generate a string based on 2 character values passed into the function.
C) This function can be used only on tables where there is a p_first and p_last column.
D) This function can be used against any table.
E) This function can be used only if the two parameters passed in are not null values.
F) This function cannot be used in a SELECT statement.

Solutions: