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Oracle9i program with pl/sql Sample Questions:

1. This statement fails when executed:
CREATE OR REPLACE TRIGGER CALC_TEAM_AVG
AFTER INSERT ON PLAYER
BEGIN
INSERT INTO PLAYER_BATSTAT (PLAYER_ID, SEASON_YEAR,AT_BATS,HITS)
VALUES (:NEW.ID, 1997, 0,0);
END;
To which type must you convert the trigger to correct the error?

A) Row
B) Before
C) ORACLE FORM trigger
D) Statement

2. Examine this code:
CREATE OR REPLACE FUNCTION calc_sal(p_salary NUMBER)
RETURN NUMBER
IS
v_raise NUMBER(4,2) DEFAULT 1.08;
BEGIN
RETURN v_raise * p_salary;
END calc_sal;
/
Which statement accurately call the stored function CALC_SAL? (Choose two)

A) SELECT last_name, salary, calc_sal(salary)
FROM employees ORDER BY
calc_sal(salary);
B) UPDATE employees (calc_sal(salary))
SET salary = salary * calc_sal(salary);
C) INSERT calc_sal(salary) INTO employees
WHERE department_id = 60;
D) DELETE FROM employees(calc_sal(salary))
WHERE calc_sal(salary) > 1000;
E) SELECT salary, calc_sal(salary)
FROM employees
WHERE department_id = 60;

3. What is true about stored procedures?

A) A stored procedure uses the DELCLARE keyword in the procedure specification to declare formal parameters.
B) A stored procedure is named PL/SQL block with at least one parameter declaration in the procedure specification.
C) A stored procedure must have at least one executable statement in the procedure body.
D) A stored procedure uses the DECLARE keyword in the procedure body to declare formal parameters.

4. Which statement is valid when removing procedures?

A) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package body.
B) Use a drop procedure statement to drop a standalone procedure.
C) For faster removal and re-creation, do not use a drop procedure statement.
Instead, recompile the procedure using the alter procedure statement with the REUSE SETTINGS
clause.
D) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package specification.

5. Given a function CALCTAX:
CREATE OR REPLACE FUNCTION calctax (sal NUMBER) RETURN NUMBER
IS
BEGIN
RETURN (sal * 0.05);
END;
If you want to run the above function from the SQL *Plus prompt, which statement is true?

A) You need to create a SQL *Plus environment variable X and issue the command EXECUTE :X := CALCTAX;
B) You need to create a SQL *Plus environment variable X and issue the command EXECUTE :X := CALCTAX(1000);
C) You need to execute the command CALCTAX(1000);.
D) You need to create a SQL *Plus environment variable X and issue the command :X := CALCTAX(1000);.
E) You need to execute the command EXECUTE FUNCTION calctax;.

Solutions: