Design And Implementation Of Longjiang Bank Point Of Sale System

With the rapid development of market economy, product managers have been demanding commodity circulation efficiency, commodity management chain, business scale and commodity behavior process information digitizing more than ever, making POS (point of sale) introduced as a payment terminal equipment combining consumption, balancing inquiries, transferring, pre-authorization and etc. into one, with the characteristic of convenient, quick, safe, reliable and etc. a major trend via which bank card is normally used on payment terminal equipment. Simultaneously,the acquiring business thriving,it has also developed into a hot focus of the banks in China for less going into the pot and more coming out.The subject origins from Longjiang Bank POS system industry function.The article unfolds a full analysis of the needs and the technique feasibility of POS system,as well as an overall research of access scheme for POS system concerning the physical architecture of the bank system, and finally determines to deploy ISO8583as the form of POS terminal message transmission,transforming the message to SOP type by message format conversion sub-module.Besides,it uses c language and a specialized hardware compiler to develop the system from the point of rigor and safety of banking. At the same time,to assure the validity checking and encryption transmission of transaction messages of the POS terminal,POS system employs a dual authentication mechanism of security authentication and key management while POS machine adopts the access of key. Under the environment of IBM AIX system is the project developed and it is compiled with make,using Oracle as its database for data storage.The article mainly discusses three modules transaction message real-time processing module,comprehensive management module and terminal business transaction module.The first module deals with the forward of message and at the same time delivering it to POS comprehensive management module.Comprehensive management module is the core of the POS system,able to tackle the delivered messages from POS terminal equipment real time,and also conduct fee settlement to every trade,Above all,its SMS notification function serves the cardholder with the consumption and balance information in the form of a message when a change of the balance is caused by consumption.Terminal business transaction module mainly aims to interact with consumers,offering consumers with the spending accounts,cost and card number on a screen.The function test and performance test of the POS system carried out,it is assured that the system has fulfilled the safety anticipation of transaction processing and data delivering,as well as the new characteristics,screening of suspicious transactions,reaching the goal of the subject.Now,the system is already put into pre-launch.