Payroll system modeling Assignment 2

• THE PAYROLL SYSTEM
  
  The payroll system is a system that may be used by the HR manager to calculate employee salary and control the employee in the organization.
  The system has been design to alleviate the load of work of the HR manager for the calculation of the salary, maintenance of attendance, controlling of employee leave, calculating their tax and other deductions, generate emoluments and storing of all the aforesaid jobs.
  
  
  Clock card System - the clock card system is responsible for maintaining the attendance. It uses a special card where the employees details is stored and the whenever the employee in coming to work he just need to introduce the card in the machine like an ATM and the system will keep track of the entry time of the employee which in turn will compile and save to be used for the attendance and the calculation of salary.
  
  The leave control system - this system is used to control the different leave that an employee is entitled once he is employed. It is also used when an employee has been granted a leave to record the leave and to deduct from his respective balance.
  
  Personnel System - the personnel system is used to record new employees in the organization and generation of the employees ID number and to create his clock card.
  
  Payroll system - the payroll system will receive the information from the above subsystem and is responsible to save in the database and which would finally help in calculating the salary, generate the Organizational chart, pay slip, emolument etc and the backup of the whole payroll information.
  
  The medical scheme/tax/pension - be responsible to maintain the deductions pertaining to tax and the medical scheme of the employees of the organization.
  
  Accounting system - The accounting system is another system where the payroll system needs to send details for the payment of the employee and any correspondence with the bank.
  
  The emergent properties
  
  The emergent properties may be defined as the attributes of the system as a whole. It is often difficult to predict the values of these emergent properties in advance. They can only be measured once the sub-systems have been integrated to form the complete system. Emergent properties are divided into two main part namely functional and nonfunctional property.
  
  
  
  Functional property for payroll system
  
  The emergent property for this system may be:
  
  
• Payment of salary
• Controlling of attendance
• Payment of tax,pension.
  
  Non-functional properties

• Reliability
• Performance
• Security