NEED THE ERD DIAGRAM

1. Customer Booking Scenario a) Draw an ERD for the following relational schema: CUSTOMER (CUS ID, CUS First Name, CUS Last Name, CUS Date of Birth, CUS Address, CUS Email, CUS Phone Numebr) BOOKING (BOK Reference, BOK Date) The two entities are related with the following business rule: - Each CUSTOMER may book many BOOKINGS. - Each BOOKING is booked by one and only CUSTOMER. b) Extend the existing ERD with APPOINTMENT, SERVICE, and EMPLOYEE entities. Make sure to add relevant attributes to each entity. The following business rules apply: - Each BOOKING consists of maximum of three APPOINTMENTS. - Each APPOINTMENT belongs to one and only BOOKING. - Each APPOINTMENT comprises of one and only one SERVICE. - Each SERVICE may be offered in many APPOINTMENTS. - Each EMPLOYEE may confirm many APPOINTMENTS. - Each APPOINTMENT is confirmed by one and only one EMPLOYEE