University System Entity-Relationship (ER) diagram has entities like staff, sessions, users, centers, guardians, departments, guardians_students, etc. As the below university system ER diagram illustrates, there are attributes like guardian_id, guardian_name, guardian_nric, guardian_phonehome, department_name, guardian_id, student_id, user_id, user_login, user_password, staff_status, staff_phoneoffice, staff_firstname, staff_lastname, and others. The university system entity-relationship model is a graphical approach to database design. It can be designed or created using EdrawMax or EdrawMax Online. It has several predefined templates that make designing such ERM diagrams very easy. It is a high-level data model that defines data elements and their relationship for a specified software system. At the same time, an affiliation exists between various qualities of a component.