Telephone Directory Management System Class Diagram describes the structure of a Telephone Directory Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Telephone Directory Management System are New Phone Number, Contact Details, Address, City Name, List of Contact, Email Id.

Ticket Reservation System Class Diagram describes the structure of a Ticket Reservation System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Ticket Reservation System are Trains, Seats Availability, Fare, Stations, Booking, Passengers.

Timetable Management System Class Diagram describes the structure of a Timetable Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Timetable Management System are Timetable, Attendance, Class, Student, Subject, Teacher.

Tourism Management System Class Diagram describes the structure of a Tourism Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Tourism Management System are Customer, Travel Agent, Package, Transportation, Booking, Hotel.

Traffic Controller System Class Diagram describes the structure of a Traffic Controller System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Traffic Controller System are Traffic, Routes, Length, Traffic Polices, Divertions, Traffic Light.

Traffic Monitoring System Class Diagram describes the structure of a Traffic Monitoring System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Traffic Monitoring System are Traffic, Routes, Length, Traffic Polices, Divertions, Vehicle Types.

Training and Placement Management System Class Diagram describes the structure of a Training and Placement Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Training and Placement Management System are Trainning, Placement, Job, Jobskeer, Applicant, Company.

Training Management System Class Diagram describes the structure of a Training Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Training Management System are Training, Skills, College, Comapny, Job, Knowledge.

Travel Agency Management System Class Diagram describes the structure of a Travel Agency Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Travel Agency Management System are Travel Agency, Customer, Cabs, Bookings, Hotels, Payments.

Travel and Travel Management System Class Diagram describes the structure of a Travel and Travel Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Travel and Travel Management System are Package, Transportation, Booking, Hotel, Tour, Customers.