ㄷㄷㄷ.md

test2

sequenceDiagram
    participant User
    participant UI as "User Interface"
    participant ReservationEngine as "Reservation Engine"
    participant PaymentSystem as "Payment System"
    participant NotificationService as "Notification Service"
    participant Database as "Database"
    participant Hotel as "Hotel"
    
    User->>UI: 호텔 검색 및 선택
    UI->>ReservationEngine: 호텔 검색 요청
    ReservationEngine->>Database: 호텔 정보 조회
    Database-->>ReservationEngine: 호텔 정보 반환
    ReservationEngine-->>UI: 호텔 목록 표시
    UI->>User: 호텔 목록 표시
    
    User->>UI: 예약 요청
    UI->>ReservationEngine: 예약 요청
    ReservationEngine->>Database: 예약 정보 저장
    Database-->>ReservationEngine: 예약 정보 저장 확인
    ReservationEngine->>PaymentSystem: 결제 요청
    PaymentSystem->>Database: 결제 처리
    Database-->>PaymentSystem: 결제 정보 저장 확인
    PaymentSystem->>ReservationEngine: 결제 완료
    ReservationEngine->>NotificationService: 예약 알림
    NotificationService->>User: 예약 확인 알림
    ReservationEngine-->>UI: 예약 완료 메시지
    UI->>User: 예약 완료 메시지 표시

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##수정본

classDiagram
  class MembershipSystem {
    + signUp()
    + viewProfile()
    + withdraw()
    + approveMembership()
    + listMembersByGrade(grade)
    + listWithdrawnMembers()
    - upgradeMembership()
  }

  class User {
    + signUp()
    + viewProfile()
    + withdraw()
    + accumulatePoints()
  }

  class Admin {
    + approveMembership()
    + listMembersByGrade(grade)
    + listWithdrawnMembers()
  }

  class Membership {
    - points: int
    - grade: string
    + getPoints()
    + getGrade()
    + upgradeMembership()
  }

  MembershipSystem o-- User : 포함
  MembershipSystem o-- Admin : 포함
  MembershipSystem o-- Membership : 포함
  MembershipSystem "1" o-- "*" Membership : 관리
  User o-- Membership : 소유
  Admin o-- Membership : 소유

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