A. Defining Multiple Classes  We want to develop a minimal, simple object-oriented application for a university.  A university has three major entities: Students, Faculties and Courses.  First, we have to identify the relationships among them.  The following relationship diagram shows the relationships among Student, Course and Faculty class.

 Now, we need to develop a menu-based application.  The initial menu may have the following options: a. Add b. Delete c. Update d. Print e. Search

 For each of these options, we may provide further options. Suppose, for ‘Add’ option, next we may show the following options: a. Add a Student b. Add a Course c. Add a Faculty For ‘Delete’ and ‘Update’, we may provide the same options.

 For ‘Print’ option, we may further provide the followings: a. Print all students b. Print all course c. Print all faculties d. Print information of a student e. Print information of a course f. Print information of a faculty g. Print student list and faculty information of a course h. Print courses taken by a student

 Search is very important feature in our application. For ‘Search’ option, we may provide the followings: a. Search a Student b. Search a Course c. Search a Faculty d. Search whether a student takes a course e. Search whether a faculty teaches a course f. Search courses taken by a student g. Search courses taught by a faculty