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

• Payroll Object
• Salary Object
• Employee Object
• Payments Object
• Appraisals Object

This is the UML sequence diagram of Petrol Pump Management System which shows the interaction between the objects of Inventory, Reading, Sales, Fule, Tankers. The instance of class objects involved in this UML Sequence Diagram of Petrol Pump Management System are as follows:

• Inventory Object
• Reading Object
• Sales Object
• Fule Object
• Tankers Object

This is the UML sequence diagram of Pharmacy Management System which shows the interaction between the objects of Inventory, Sells, Medicines, Company, Pharmacy. The instance of class objects involved in this UML Sequence Diagram of Pharmacy Management System are as follows:

• Inventory Object
• Sells Object
• Medicines Object
• Company Object
• Pharmacy Object

This is the UML sequence diagram of Photo Gallery System which shows the interaction between the objects of Media, Login, Image, Wallpaper, Uploads. The instance of class objects involved in this UML Sequence Diagram of Photo Gallery System are as follows:

• Media Object
• Login Object
• Image Object
• Wallpaper Object
• Uploads 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 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