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System Use-Case Modeling - Coggle Diagram

- - - - Whose goal the use case is trying to satisfy
    - - Provide some service to the process under discussion
  - - - Short period of time, usually minutes
      - Performed a few (sometimes just one) human actors
      - External computational systems = Online actors
    - - Isolation
      - Pattern: CRUD
        
        Consistent result
      - Overview vs detail
        
        Overview UC
        
        High-level overview of the
        requirements
        
        Detail UC
      - Essential
        
        Essential UC
        
        :red_cross: mention interface technology
        
        Concrete/Real UC
        
        Specifically written for a given interface technology
      - Brief
        
        Brief
        
        Casual
        
        Fully Dressed
- - - - System Administrators
      - Databases Configuration
      - Users Management
  - - - Activity Diagram
      - Sequence Diagram
    - - <<Report>>
      - <<CRUD>>
  - - - Use Case Description (Expanded UC)
        
        :spiral_note_pad:
        
        System events [IN]
        
        System returns [OUT]
        
        <<Report>>
        
        :notebook_with_decorative_cover:
        
        System presents … grouped by … & sorted by …
        
        User provides
        
        :notebook_with_decorative_cover:
        
        Use-Case Name
        
        Brief Description
        
        Trigger
        
        Actors
        
        Relationships
        
        Precondition
        
        Postcondition
        
        Basic Flow of Events
        
        Alternative Flows of Events
        
        <<CRUD>>
        
        Người dùng chọn
        
        Tạo: Bước 1a
        
        Truy xuất: Bước 1b
        
        Cập nhật: Bước 1c
        
        Xóa: Bước 1d
        
        Xử lý ngoại lệ cho các bước
      - Sequence Diagram
        
        :
        
        System commands
        
        Change data
        
        System queries
        
        Return data
        
        Elements
        
        Information flows
        
        Actor :left_right_arrow: Actor
        
        Actors’ communication among themselves
        
        Actor :left_right_arrow: System
        
        System events: [IN]
        
        System :left_right_arrow: Actor
        
        System returns: [OUT]
        
        Interface :left_right_arrow: Controller
        
        command (arguments)
        
        System command
        
        System query
        
        query (arguments)
        result
        
        result := query (arguments)
        
        Actor :left_right_arrow: Interface
        
        Information
        
        Strategy
        
        Stateless
        
        Statefull
        
        Alternate flows in system sequence diagrams