Introduction to Transaction Management V2 3Up

.pdf
School
Marist College **We aren't endorsed by this school
Course
COM 102
Subject
Business
Date
Oct 20, 2023
Pages
21
Uploaded by BarristerTitanium11941 on coursehero.com
1 Introduction to z/OS Basics Chapter 11: Transaction managers on z/OS Introduction to Transaction Management Chapter objectives Be able to: Describe the role of large systems in a typical online business. List the attributes common to most transactional systems. Explain the role of CICS in online transaction processing Describe CICS programs, CICS transactions, and CICS tasks Explain what conversational and pseudo- conversational programming is Explain CICS and Web-enabling Discuss the IMS components 2 Introduction to Transaction Management Key terms in this chapter BMP BMS conversational CICS TS task/thread region PSB IMS TM CICS command IRLM multithreading multitasking transaction unit of work two-phase commit wireless access point (WAP) 3
2 Introduction to Transaction Management Agenda Transaction Mangement Overview - Overview/Example - Transaction Managers on z/OS CICS IMS/TM Websphere - Transaction Management in General - Transaction Management in General CICS Overview Presentation CICS - a little more detail - Transaction flow - Conversational / pseudo-conversational programming - Writing a CICS program - CICS System Structure 4 Introduction to Transaction Management Characteristics of transactional systems Many users Repetitive Short interactions Shared data Data integrity Low cost / transaction 5 Introduction to Transaction Management Example of online processing: a travel agency Mainframe applications designed for: - employee and customer information - contacts with car rental companies - hotels - airline schedules Changes must be immediately reflected to application end-users (in real time) Contrast with batch processing 6
3 Introduction to Transaction Management Example of online processing (continued) Car Rental Agency Hotel Airline Travel Agency WAP HTTP 7 Introduction to Transaction Management A practical example Car Rental Agency Hotel Airline 8 Travel Agency WAP HTTP Introduction to Transaction Management Transactional systems Requirements: ACID A tomicity C onsistency I solation D urability 9
Page1of 21
Uploaded by BarristerTitanium11941 on coursehero.com