This is the UML sequence diagram of Leave Management System which shows the interaction between the objects of Leave, Notification, Approve Leave, Company, Branch. The instance of class objects involved in this UML Sequence Diagram of Leave Management System are as follows:

• Leave Object
• Notification Object
• Approve Leave Object
• Company Object
• Branch Object

This is the UML sequence diagram of Library Application System which shows the interaction between the objects of Expiry, Student, Book, Address, Supplier. The instance of class objects involved in this UML Sequence Diagram of Library Application System are as follows:

• Expiry Object
• Student Object
• Book Object
• Address Object
• Supplier Object

This is the UML sequence diagram of Movie Library Management System which shows the interaction between the objects of Movie Type, Shows, Download, Movie Library, Movie. The instance of class objects involved in this UML Sequence Diagram of Movie Library Management System are as follows:

• Movie Type Object
• Shows Object
• Download Object
• Movie Library Object
• Movie Object

This is the UML sequence diagram of Metro Rail Ticket Booking System which shows the interaction between the objects of Stations, Booking Counter, Metro, Route, Fare. The instance of class objects involved in this UML Sequence Diagram of Metro Rail Ticket Booking System are as follows:

• Stations Object
• Booking Counter Object
• Metro Object
• Route Object
• Fare Object

This is the UML sequence diagram of Mobile Phone Billing System which shows the interaction between the objects of Connection, Payments, Bill, Tarrif, Customer. The instance of class objects involved in this UML Sequence Diagram of Mobile Phone Billing System are as follows:

• Connection Object
• Payments Object
• Bill Object
• Tarrif Object
• Customer Object

This is the UML sequence diagram of Mobile Service Enqiry System which shows the interaction between the objects of Models, Payment, Warranty, Customer, Problem. The instance of class objects involved in this UML Sequence Diagram of Mobile Service Enqiry System are as follows:

• Models Object
• Payment Object
• Warranty Object
• Customer Object
• Problem Object

This is the UML sequence diagram of Mobile Shop Management System which shows the interaction between the objects of Mobile, Stock, Brand, Sell, Payment. The instance of class objects involved in this UML Sequence Diagram of Mobile Shop Management System are as follows:

• Mobile Object
• Stock Object
• Brand Object
• Sell Object
• Payment Object

This is the UML sequence diagram of Mobile Store System which shows the interaction between the objects of Customer, Payment, Sell, Stock, Brand. The instance of class objects involved in this UML Sequence Diagram of Mobile Store System are as follows:

• Customer Object
• Payment Object
• Sell Object
• Stock Object
• Brand Object

This is the UML sequence diagram of Movie Ticket Booking System which shows the interaction between the objects of Shows, Booking, Movie, Payment, Seats. The instance of class objects involved in this UML Sequence Diagram of Movie Ticket Booking System are as follows:

• Shows Object
• Booking Object
• Movie Object
• Payment Object
• Seats Object

This is the UML sequence diagram of Multiple Choice Quiz System which shows the interaction between the objects of Course, Student, Examination, Results, Mark. The instance of class objects involved in this UML Sequence Diagram of Multiple Choice Quiz System are as follows:

• Course Object
• Student Object
• Examination Object
• Results Object
• Mark Object