INTRO TO TP SYSTEMS IS 340 BY CHANDRA

Зарегистрируйтесь, чтобы просмотреть полный документ!

INTRO TO TP SYSTEMS IS 340 BY CHANDRA S. AMARAVADI

IN THIS PRESENTATION. . =Definitions =Characteristics of TP systems =TP concept =TP cycle =Case studies of SABRE, VISA =Case study of Payroll system =TP and competitive advantage

DEFINITIONS Transaction processing systems (TP systems) Systems which process business transactions Transaction: events to which a business must Respond; exchange that has financial implications

CHARACTERISTICS OF TP SYSTEMS Concerned with business operations Deal with customers, suppliers, vendors, gov. Transactions/exchange with these entities High volume (millions of records) Also involve inquiries (was check #23 cashed? ) Could be batch or online (OLTP)

BATCH VS ON-LINE PROCESSING BATCH PROCESSING: Transactions are grouped and processed at the end of a specified time period. ONLINE TRANSACTION PROCESSING: Transactions are processed as and when they occur.

CHARACTERISTICS OF TP SYSTEMS. . n n n Traditionally mainframe + COBOL Shift towards object-oriented, client-server Towards PC-based and Web-based systems What type of organizations use TP systems? Who are the primary users of TP systems?

TP CONCEPT Online Data Entry Scanners Application. Files Transaction Processing Database Update Transaction Reports Summary Reports E. g. receipt for a deposit E. g. monthly statement

TP CYCLE u. Data entry - keyboards, scanners, (e. g. credit cards, price tags) u. Processing itself (Batch, OLTP) Maintain account. . . If dep. then acct-bal=bal. + amt If withdrawal then. . . u. Database updates u Reports/documents u. Inquiries Q Classify Q Sort Q Merge Q Group Q Update

ORDER PROCESSING Customer Back order Receive order Inventory Receipt of goods, invoice Warehouse

FOR DISCUSSION Discuss a payroll system from the point of view of inputs, processing and outputs. INPUTS PROCESSES OUTPUTS

TP EXAMPLES & CASE STUDIES

SABRE HISTORY 8 A fledgling airline 8 Informal booking prior to the war 8 Demand for travel after WWII 8 Manual booking

SABRE HISTORY. . AIRLINE RESERVATIONS AFTER THE WAR “A large cross-hatched board dominates one wall, its spaces filled with cryptic notes. At rows of desks sit busy men and women who continually glance from thick reference books to the wall display while continuously talking on the telephone and filling out cards. One man sitting in the back of the room is using field glasses to examine a change that has just been made high on the display board. Clerks and messengers carrying cards and sheets of paper hurry from files to automatic machines. The chatter of teletype and the sound of card sorting equipment fills the air” [-- From “The Virtual Corporation by Davidow and Malone P 43]

SABRE HISTORY. . u. Charles Amman (R&D) takes charge u. Tubes and marbles prototype u Next improvement: “Reservisor” system u Still 8% transactions in error u Takes 12 people, 15 steps and 3 hrs! u IBM jumps in u. After many false starts, SABRE in 1962 u. Installation $2. 1 million, HW 37 million u$16, 000 per agent u. Revenues of $500 million

SABRE Is a classic example of a TP system reservation system used by AA ◦ Worldspan, Galileo, Patheo, and Abacus 45 million records 200, 000 new records added daily 60, 000 terminals 6 mainframes

DISCUSSION What characteristics of TP systems are exhibited by SABRE?

VISA’S CREDIT CARD PROCESSING Merchant’s bank Merchant/Store Cardissuing bank Cardholder

VISA’S CREDIT CARD PAYMENT 4 Customer makes purchase 4 Merchant’s bank linked via VISA network to the bank that issued the card 4 Card issuing bank approves the charge 4 Bank subtracts fee and pays rest to merchant 4 Merchant’s bank submits charge to VISA 4 VISA charges credit card company 4 Card holder’s acct # checked against black list

VISA’S CREDIT CARD PROCESSING +10 million merchants world-wide accept VISA + MC +VISA + MC largest TP system +45 billion transactions a year

OTHER APPLICATIONS OF TP Payroll Order entry Billing Credit card Reservations Inventory Stock trades

TP AND COMPETITIVE ADVANTAGE Competitive advantage of TP ◦ operational η ◦ better service For Discussion: ◦ What would TP systems do in a company like State Farm? What are the operational benefits?

THE END!

Скачать презентацию INTRO TO TP SYSTEMS IS 340 BY CHANDRA

54fe08eb68f28a290bf07ace403abcc4.ppt

Количество слайдов: 22