Activity Management System Class Diagram describes the structure of a Activity Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Activity Management System are Activity, Users, Activity Type, Timeslots, Attandance, Particiapants.

Advertisement Management System Class Diagram describes the structure of a Advertisement Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Advertisement Management System are Advertisement, Advertisement Types, Sizes, Payments, Customers, Places.

Airline Booking System Class Diagram describes the structure of a Airline Booking System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Airline Booking System are Ticket, Airlines Booking, Passenger, Ticket, Booking Enquiry,, Airline Enquiry.

Airline Managmenet System Class Diagram describes the structure of a Airline Managmenet System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Airline Managmenet System are Airlines Booking, Passengar, Ticket Booking, Booking Enquiry, Airline Enquiry, Employee.

Airlines Reservation System Class Diagram describes the structure of a Airlines Reservation System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Airlines Reservation System are Airlines, Reservation, Passengar, Ticket Booking, Employee, Airline Enquiry.

Alumni Information System Class Diagram describes the structure of a Alumni Information System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Alumni Information System are Alumni, College, College Mates, Social Network, Opportunity, College News.

Appartment Maintance Management System Class Diagram describes the structure of a Appartment Maintance Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Appartment Maintance Management System are Appartment, Block, Appartment Owner, Monthly Maintenance Expences, Maintenance Bill, Receipt.

Art Gallery Management System Class Diagram describes the structure of a Art Gallery Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Art Gallery Management System are Arts, Customer, Order, Order Update, Payment, Arts Stock.

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

Auto Spare Parts Management System Class Diagram describes the structure of a Auto Spare Parts Management System classes, their attributes, operations (or methods), and the relationships among objects. The main classes of the Auto Spare Parts Management System are Purchase, Sales, Reports, Billing, Invoice, Order.