REVIEW OF RELATED LITERATURE AND STUDIES
One of the significance step is research project is conducting a literature review. Through this chapter, the readers can familiarize to the study of researcher. The related and previous studies presented in this chapter will give the readers and future researchers, an idea of the proposed system of the proponent. The proponent selected and reviewed these studies and previous works to provide information to the readers
2.1 Related Literature
The researcher gathered information related to their study to prove the effectiveness of the proposed system. This information was based on the knowledge of the expert which served as guide to the researcher to pursue the study.
2.1.1 Foreign Literature
A computer reservations system CRS is a computerized system used to store and retrieve information and conduct transactions related to air travel. Originally designed and operated by airlines, CRSes were later extended for the use of travel agencies; major CRS operations that book and sell tickets for multiple airlines are known as global distribution systems (GDS). Airlines have divested most of their direct holdings to dedicated GDS companies, who make their systems accessible to consumers through Internet gateways. Modern GDSes typically allow users to book hotel rooms and rental cars as well as airline tickets. They also provide access to railway reservations in some markets although these are not always integrated with the main system. [http://en.wikipedia.org/wiki/Computer_reservations_system]
Since computer power was the critical resource, efficiency of processing became the main goal. Emphasis was placed on automating existing process such as purchasing or paying, often within single department [Jeffrey A. Hofer on Modern System Analysis and Design (1996).]
Automation is the use of control systems (such as numerical control, programmable logic control, and other industrial