EER (Enhanced Entity Relationship) diagram: E Employee o date_hired: date works in Person o person_ID: int name : string address string birth_date date phone_number : string is a is a (v) Volunteer o skill: string (N) Nurse o certificate : string is a (C) CareCentre o location : string isAppointedNurselnCharge is a P Physician o specialty : string o pager_number : string refers <<(Pt, #FF7700) >> Patient o contact_date: date I) Item o item_number: int description : string unit_cost: decimal consumes/isConsumed T Technician o skill : string L Laboratory o location : string performs performs «(Tr, #FF7700)>> Treatment o treatment_ID: string B Bed o bed_number: int room_number: int s Staff o job_class: string « (Vt, #FF7700) >> Visit o date : date comments: string

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