This is the UML sequence diagram of Railway Enquiry System which shows the interaction between the objects of Trains, , Booking, Stations, Customers Timetable. The instance of class objects involved in this UML Sequence Diagram of Railway Enquiry System are as follows:

• Trains Object
• Object
• Booking Object
• Stations Object
• Customers Timetable Object

This is the UML sequence diagram of Product Supply Management System which shows the interaction between the objects of Accounts, Product, Stocks, Delivery, Order. The instance of class objects involved in this UML Sequence Diagram of Product Supply Management System are as follows:

• Accounts Object
• Product Object
• Stocks Object
• Delivery Object
• Order Object

This is the UML sequence diagram of Pizza Ordering System which shows the interaction between the objects of Payments, Customer, Order, Pizza, Coupans. The instance of class objects involved in this UML Sequence Diagram of Pizza Ordering System are as follows:

• Payments Object
• Customer Object
• Order Object
• Pizza Object
• Coupans Object

This is the UML sequence diagram of Placement Cell Management System which shows the interaction between the objects of Job, Company, Applicant, College, Qualification. The instance of class objects involved in this UML Sequence Diagram of Placement Cell Management System are as follows:

• Job Object
• Company Object
• Applicant Object
• College Object
• Qualification Object

This is the UML sequence diagram of Placement Office Automation System which shows the interaction between the objects of Resumes, Registration, Placements, Skills, Company. The instance of class objects involved in this UML Sequence Diagram of Placement Office Automation System are as follows:

• Resumes Object
• Registration Object
• Placements Object
• Skills Object
• Company Object

This is the UML sequence diagram of Poll Survey System which shows the interaction between the objects of Users, Polls, Registration, Survey, Results. The instance of class objects involved in this UML Sequence Diagram of Poll Survey System are as follows:

• Users Object
• Polls Object
• Registration Object
• Survey Object
• Results Object

This is the UML sequence diagram of Product Service Management System which shows the interaction between the objects of Delivery, Stocks, Accounts, Order, Inventory. The instance of class objects involved in this UML Sequence Diagram of Product Service Management System are as follows:

• Delivery Object
• Stocks Object
• Accounts Object
• Order Object
• Inventory Object

This is the UML sequence diagram of Project Planning Management System which shows the interaction between the objects of Ticket, Salary, Project, Task, Employee. The instance of class objects involved in this UML Sequence Diagram of Project Planning Management System are as follows:

• Ticket Object
• Salary Object
• Project Object
• Task Object
• Employee Object

This is the UML sequence diagram of Provident Fund System which shows the interaction between the objects of Contributions, Compnay Shares, Registration, Employee Shares, Provident Fund. The instance of class objects involved in this UML Sequence Diagram of Provident Fund System are as follows:

• Contributions Object
• Compnay Shares Object
• Registration Object
• Employee Shares Object
• Provident Fund Object

This is the UML sequence diagram of Property Management System which shows the interaction between the objects of Approvals, Buyers, Sellers, Cost, Property Type. The instance of class objects involved in this UML Sequence Diagram of Property Management System are as follows:

• Approvals Object
• Buyers Object
• Sellers Object
• Cost Object
• Property Type Object