PURPOSE OF INTERNET RESERVATIONs
The purpose of a reservation system is to allow people to book events in advance some of these include cinema bookings as well as airline booking, these are real time transaction systems as before your seat in the movie or on the plain is confirmed the amount required needs to be paid in full immediately or there is the potential that someone else may purchase that particular seat. This is mainly online transaction process which the user needs to initiate almost immediately opposed to batch systems, each transaction must complete within a reasonable amount of time. If an operation takes longer than a few seconds feedback must be provided to assure the user that processing is indeed taking place and that an error has not occured.