You are a software engineer and you are asked to collect and model the requirements of a training center that offers a set of training courses. The system should save the information of the offered course such as: title, number of hours, schedule, main topics and cost. It also should be able to enroll the trainee and keep their information such as name, gender and mobile #. A trainee my register in many courses and each course must have at least five trainees. Each course is taught by one trainer; the information of the trainers such as name, gender, mobile # and specialization should be available in the system too. Lists of trainees in the courses can be produced by the secretary, manager and trainers. The secretary can view the trainers and trainees' personal information and receive payments from trainees. Trainer should be able to set the result of the trainees either pass or fail. A summary report that shows the number of students per course and a summary report of the received payments can be produced by the secretary and manager. 1. draw entity relationship diagram n