Exercise I: Introduction Database/E-R Model (25 marks) You have been hired to design the conceptual model for a Dental Clinic database. Your diagram should have all the needed details. You may make any reasonable assumptions but you have to state them clearly. The clinic has several dentists. Each dentist has a unique Number, name, nationality, multiple room-number, salary, birth-date and home-address (Box, City, Zip). Each client (patient) has a unique Code, name, home-phone, work-phone, address, and birth-date. Each client is assigned to one dentist. All future visits will be to the same dentist. A client can be insured or self-paying. An insured client should have an insurance company-name, and company-Phone, while a self-paying client must have a bank-name and a bank account. Each visit of a client is described by a date, type, action, fee, and date-of-next-appointment 1. Draw the E-R diagram. (12 marks) 2. Provide corresponding schema of relation resulting for the transformation from ER to RM (5 marks) 3. Derive the corresponding draw the graph of relations. (8 marks)