Figure E4.l shows an IE model for the health spa example in Exercise 3.2. Translate the IE model to a UML model. Note the following about the moclel: TherapistPreference Customer customerlD (FK) customerlD favoredTherapistlD (FK) ~>--+i--c-u-s-to_m_e_rN_a_m_e---Jt---ClE:j TreatmentPreference customerlD (FK) favoredreatmentlD (FK) WorkSession workSessionlD workDate startime endime therapistlD (FK) 1.-------------, Appointment Therapist therapistlD f----" 1------------1 appointmentlD startDateTime discountPercent discountAmount subjectlD (FK) treatmentlD (FK) therapistlD (FK) roomlD (FK) therapistName healthSpalD (FK) 1- - - - - - - 1 HealthSpa Room healthSpalD 1- - - ,-w,: roomlD ,__ ____ _, roomNumber healthSpaName healthSpalD (FK) TheraplstQualiflcatlon therapistlD (FK) treatmentlD (FK) Payment paymentlD paymentAmount paymentype paymentDate appointmentlD (FK) payerlD (FK) Treatment treatmentlD treatmentName duration listPrice

Extend the spa model by adding a generalization for different kinds of payments (credit cards, debit cards, cash, gift certificates).