Draw logical and physical DFD for the following payroll system: A list of employees with their basic pay is sent to a clerk. He calculates the gross pay using the standard allowances which are known for each pay slab. Deduction statements such as loan repayment, subscription to association etc. are also sent to another clerk who matches these slips with the slips of gross pay and calculates net pay. This slip is used by another clerk to write out pay cheque for each employee and sent to respective employees. The total pay bills paid are also computed.