Describe each of the following data processing methods and give an example of where used.

Online processing – Data is processed immediately it is received e.g.internet banking, online payment system using credit card.
Batch processing – Data is accumulated as a group then it is processed as one/ a group. E.g in payroll system
Real-time – Computer processes the incoming data as soon as it occurs,up to dates the transactions file and gives an immediate response, that would affect the events as they happen e.g. making reservations for airlines seats, hotels etc.