As a database analyst, you were asked to prepare a Domain Class Diagram (containing all class, relationships, attributes, etc.) representing the requirements for Kolej Yayasan Kalsom library. The following case study describes the scenario. Kolej Yayasan Kalsom library is proposing to have an online theses repository system to store the information about undergraduate students' theses. By having an online theses repository system, the librarian is able to store and update information relating to the thesis, such as the title, the student's details, the supervisor's details, the project research area, and also a copy of the thesis. A student can have only one thesis, and a thesis belongs to only one student. A thesis might have multiple research areas, and each research area might have more than one thesis. A supervisor can supervise many students, and a student can be supervised by a maximum of two supervisors. Registered users can search the thesis based on several criteria such as the title and research area. They could also search and view the supervisor's details to find potential supervisors based on their preferred research area