One of the very significant quality model presented by Jim McCall (General Electrics Model of 1977) details 11 Quality Factors that describe the external view of the software, as viewed by the users. Including Reliability, which is the system's ability not to fail. According to the above UML diagram, you will need to refine the UML design using at least two appropriate design patterns according to the Reliability quality factor. Additionally, using an experimental-based evaluation technique; provide one or two measuring technique(s) to compare between the two design patterns.

Booking Class Role Class Permission Class +role_id: int +role_title: String +role_description: String +addRole) +editRole) +deleteRole) +searchRole() +assignRole) +permission_id: int +permission_role_id: int +permission_title: String +permission_module: String +permission_description: String +addPermission te dit Permission +deletePermission() +search Permission() +booking_id: int +booking_type: String +booking_title: String +booking_description: String +booking_date: date +addBooking() +editBooking() +deleteBooking() +searchBooking Customer Class User Class +user_id: int +user_role: int +user_name: String +user_email: String +user dob: date +user_address: string +addUser() te ditUser() +deleteUser() +search User +customer_id: int +customer_name: String +customer_mobile: String +customer_email: String +customer_address: String +customer_username: String +customer_password: String +addCustomer +edit Customer() +deleteCustomer() +search Customer() Rooms Class Hotel Class Payments Class +room_id:int +room_exam_id: int +room_number: String +room_type: String +room_description: String +addRooms() te ditRooms() +deleteRooms() +searchRooms() thotel_id: int thotel_description: string thotel_type: String +hotel_name: String +hotel_rent: string thotel_address: String +add Hotell) +e dit Hotel) +delete Hotel() +search Hotell +payment_id:int +payment customer_id: int +payment_description: String +payment amount: String +payment_date: date +addPayments() +e ditPayments() +deletePayments() +searchPayments() Booking Class Role Class Permission Class +role_id: int +role_title: String +role_description: String +addRole) +editRole) +deleteRole) +searchRole() +assignRole) +permission_id: int +permission_role_id: int +permission_title: String +permission_module: String +permission_description: String +addPermission te dit Permission +deletePermission() +search Permission() +booking_id: int +booking_type: String +booking_title: String +booking_description: String +booking_date: date +addBooking() +editBooking() +deleteBooking() +searchBooking Customer Class User Class +user_id: int +user_role: int +user_name: String +user_email: String +user dob: date +user_address: string +addUser() te ditUser() +deleteUser() +search User +customer_id: int +customer_name: String +customer_mobile: String +customer_email: String +customer_address: String +customer_username: String +customer_password: String +addCustomer +edit Customer() +deleteCustomer() +search Customer() Rooms Class Hotel Class Payments Class +room_id:int +room_exam_id: int +room_number: String +room_type: String +room_description: String +addRooms() te ditRooms() +deleteRooms() +searchRooms() thotel_id: int thotel_description: string thotel_type: String +hotel_name: String +hotel_rent: string thotel_address: String +add Hotell) +e dit Hotel) +delete Hotel() +search Hotell +payment_id:int +payment customer_id: int +payment_description: String +payment amount: String +payment_date: date +addPayments() +e ditPayments() +deletePayments() +searchPayments()