This Use Case Diagram is a graphic depiction of the interactions among the elements of Telephone Billing Payment System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Telephone Billing Payment System.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Telephone Directory Management System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Telephone Directory Management System.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Ticket Reservation System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Ticket Reservation System. The main actors of Ticket Reservation System in this Use Case Diagram are: Super Admin, System User, Agents, Customer, who perform the different type of use cases such as Trains, Manage Seats, Manage Fare, Manage Stations, Manage Booking, Manage Passengers, Manage Ticket, Manage Users and Full Ticket Reservation System Operations.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Timetable Management System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Timetable Management System.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Tourism Management System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Tourism Management System.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Traffic Controller System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Traffic Controller System. The main actors of Traffic Controller System in this Use Case Diagram are: Super Admin, System User, Users, Anonymous Users, who perform the different type of use cases such as Traffic, Manage Routes, Manage Length, Manage Traffic Polices, Manage Divertions, Manage Traffic Light,, Manage Users and Full Traffic Controller System Operations.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Traffic Monitoring System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Traffic Monitoring System. The main actors of Traffic Monitoring System in this Use Case Diagram are: Super Admin, System User, Traffic Police, Users, who perform the different type of use cases such as Traffic, Manage Routes, Manage Length, Manage Traffic Polices, Manage Divertions, Manage Vehicle Types, Manage Users and Full Traffic Monitoring System Operations.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Training and Placement Management System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Training and Placement Management System.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Training Management System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Training Management System. The main actors of Training Management System in this Use Case Diagram are: Super Admin, System User, Company, Trainee, who perform the different type of use cases such as Training, Manage Skills, Manage College, Manage Comapny, Manage Job, Manage Knowledge, Manage Qualification, Manage Users and Full Training Management System Operations.

This Use Case Diagram is a graphic depiction of the interactions among the elements of Travel Agency Management System. It represents the methodology used in system analysis to identify, clarify, and organize system requirements of Travel Agency Management System.