Question

Willowbrook School

Chapter 6

Willowbrook School is a small private school that has retained your services as a systems analyst to assist in the development of a new information system for the school’s administrative needs.

Background

You have developed a logical model of the proposed billing system. Now you will continue the

systems analysis phase by creating an object-oriented model of the billing system. Use the

logical model that you prepared in Chapter 5 as a reference.

Tasks

1. Design at least four class objects for Willowbrook’s new system including attributes and methods. See Figure in your text for object attributes/methods illustrations.

2. Create an object relationship diagram for the system classes that you identified in Task 1 (above).

Answer 1

Answer to Question (1):

• Students Class : Manage all the operations of Students with attributes student_id, student_college_id, student_name, student_mobile, student_email, student_username, student_password, student_address and methods addStudents(), editStudents(), deleteStudents(), updateStudents(), saveStudents(), searchStudents()
• Classes Class : Manage all the operations of Classes with attributes : class_id, class_student_id, class_name, class_room, class_type, class_description and methods addClasses(), editClasses(), deleteClasses(), updateClasses(), saveClasses(), searchClasses()
• Teachers Class : Manage all the operations of Teachers with attributes teacher_id, teacher_college_id, teacher_name, teacher_mobile, teacher_email, teacher_username, teacher_password, teacher_address and methods addTeachers(), editTeachers(), deleteTeachers(), updateTeachers(), saveTeachers(), searchTeachers()
• Courses Class : Manage all the operations of Courses with attributes : course_id, course_student_id, course_registration, course_name, course_type, course_year, course_description and methods addCources(), editCources(), deleteCources(), updateCources(), saveCources(), searchCources()
• Registrations Class : Manage all the operations of Registrations with attributes registration_id, registration_student_id, registration_course_id, registration_name, registration_type, registration_number, registration_date, registration_description and methods addRegistrations(), editRegistrations(), deleteRegistrations(), updateRegistrations(), saveRegistrations(), searchRegistrations()

The Class Diagram is given below:

Anser to Question (2): Object Relationship Diagram