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Oracle9i program with pl/sql Sample Questions:

1. Examine this code:
CREATE OR REPLACE PROCEDURE insert_dept
(p_location_id NUMBER)
IS
v_dept_id NUMBER(4);
BEGIN
INSERT INTO departments
VALUES (5, 'Education', 150, p_location_id);
SELECT department_id
INTO v_dept_id
FROM employees
WHERE employee_id=99999;
END insert_dept;
/
CREATE OR REPLACE PROCEDURE insert_location
( p_location_id NUMBER,
p_city VARCHAR2)
IS
BEGIN
INSERT INTO locations(location_id, city)
VALUES (p_location_id, p_city);
insert_dept(p_location_id);
END insert_location;
/
You just created the departments, the locations, and the employees table. You did not insert any
rows. Next you created both procedures.
You new invoke the insert_location procedure using the following command:
EXECUTE insert_location (19, 'San Francisco')
What is the result in thisEXECUTE command?

A) The location table has one row.
The departments and the employees tables are empty.
B) The departments table has one row.
The locations and the employees tables are empty.
C) The locations, departments, and employees tables are empty.
D) The locations table and the departments table both have one row. The employees table is empty.

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

A) The specification and body of the package are stored separately in the database.
B) The specification and body of the package are stored together in the database.
C) Both the specification and body are required components of a package.
D) The package specification is required, but the package body is optional.
E) The package specification is optional, but the package body is required.

3. When creating a function in SQL *Plus, you receive this message:
"Warning: Function created with compilation errors."
Which command can you issue to see the actual error message?

A) SHOW USER_ERRORS
B) SHOW ALL_ERRORS
C) SHOW ERRORS
D) SHOW FUNCTION_ERROR

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

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

Solutions: