Method to calculate annual bonus based on salary in PL/SQL's "Employee" Class

PL/SQL OOP: Exercise-3 with Solution

Write a PL/SQL code to implement a method to calculate the annual bonus based on the salary in the "Employee" class.

Sample Solution:

PL/SQL Code:

-- Create the Employee class
CREATE TYPE Employee AS OBJECT (
emp_id NUMBER, -- Attribute for employee ID
emp_nameVARCHAR2(100), -- Attribute for employee name
salary NUMBER, -- Attribute for employee salary

    -- Method to calculate annual bonus
    MEMBER FUNCTION calculate_bonus RETURN NUMBER
);

-- Create the body of the Employee class
CREATE TYPE BODY Employee AS
    -- Method implementation to calculate the annual bonus
    MEMBER FUNCTION calculate_bonus RETURN NUMBER IS
bonus_percentage NUMBER;
bonus_amount NUMBER;
    BEGIN
        -- Determine the bonus percentage based on salary
        IF self.salary< 50000 THEN
bonus_percentage := 0.1; -- 10% bonus for salaries below 50000
        ELSIF self.salary< 100000 THEN
bonus_percentage := 0.15; -- 15% bonus for salaries between 50000 and 100000
        ELSE
bonus_percentage := 0.2; -- 20% bonus for salaries above 100000
        END IF;

        -- Calculate the bonus amount
bonus_amount := self.salary * bonus_percentage;

        -- Return the calculated bonus
        RETURN bonus_amount;
    END;
END;
/

In the above code, a class an "Employee" defines with attributes emp_id, emp_name, and salary and implements a method calculate_bonus to calculate the annual bonus determines the bonus percentage based on different salary ranges and then calculates the corresponding bonus amount.

To use this Employee objects:

PL/SQL Code:

-- Example of using the Employee class
DECLARE
emp_obj Employee; -- Declare an instance of the Employee class
emp_bonus NUMBER; -- Declare a variable to store the bonus amount
BEGIN
    -- Create an Employee object with ID 1, name 'Musa Lara', and salary 75000
emp_obj := Employee(1, 'Musa Lara', 75000);

    -- Calculate the annual bonus using the calculate_bonus method
emp_bonus := emp_obj.calculate_bonus;

    -- Display the result
    DBMS_OUTPUT.PUT_LINE('Employee Bonus: ' || emp_bonus);
END;
/

Sample Output:

Statement processed.
Employee Bonus: 11250

Flowchart:

Explanation:

In this example, an Employee object with ID 1, name "Musa Lara," and a salary of 75000 is creates. Then by calling the calculate_bonus method on the Employee object it calculates and display the annual bonus.

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