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An Introduction to IMS: Your Complete Guide to IBM's Information Management System (paperback)

An Introduction to IMS: Your Complete Guide to IBM's Information Management System (paperback)

By: Robert Hain (author), Dean Meltz (author), Geoff Nicholls (author), Mark Harrington (author), Rick Long (author)Paperback

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The Only Up-to-the-Minute Guide to IMS Version 9--Straight from IBM IMS ExpertsIntroduces IMS, one of the world's premiere software products Thoroughly covers key IMS functions, from security to Java supportFor both new and experienced IMS administrators, programmers, architects, and managersPrerequisite reading for IBM IMS Mastery Certificate ProgramIMS serves more than 95 percent of Fortune 1000 companies, manages 15,000,000 gigabytes of production data, and supports more than two hundred million users per day. The brand-new IBM IMS Version 9 is not just the world's #1 platform for very large online transaction processing: it integrates with Web application server technology to enable tomorrow's most powerful Web-based applications. Now, for the first time in many years, there's a completely up-to-date guide to understanding IMS in your business environment. An Introduction to IMS coversInstalling and configuring IMS Version 9Understanding and implementing the IMS hierarchical database modelUnderstanding and working with the IMS Transaction ManagerMastering core application programming concepts, including program structure and IMS control blocksTaking advantage of IMS 9 Java programming enhancementsWorking with the IMS Master TerminalAdministering IMS: system definition, customization, logging, security, operations, and moreRunning IMS in a Parallel Sysplex(r) environmentWhether you've spent a career running IMS or you are encountering IMS for the first time, this book delivers the insights and skills you need to succeed--as an application designer, developer, or administrator.

About Author

Dean H. Meltz, team lead for IMS Information Development at IBM's Silicon Valley Lab, in San Jose, California, has been an IMS technical writer for seventeen years. Rick Long, IMS systems specialist with IBM's International Technical Support Organization (ITSO), writes about IMS and teaches IMS classes worldwide. He was previously an IMS systems programmer for IBM Global Services, Australia. Mark Harrington, IMS systems programmer at IBM Global Services, UK, has spent twenty-two years working with IBM mainframes as developer, application designer, installer, and DBA. Robert Hain has been an IMS systems programmer for seventeen years. He works for IBM Global Services, Melbourne, Australia, as part of the Telstra Alliance. Geoff Nicholls, a member of IBM's Worldwide IMS Technical Support Team, works with IMS customers throughout Australia and Asia.


Figures xiii Tables xvii Foreword xix Preface xxiii Acknowledgments xxv About the Authors xxvii Part I Overview of IMS 1 Chapter 1 IMS: Then and Now 3 History of IMS: Beginnings at NASA 3Is IMS Still Strategic for Customers and IBM? 4 Chapter 2 Overview of the IMS Product 9 IMS Database Manager 10IMS Transaction Manager 12IMS System Services 13IMS Documentation 13Hardware and Software Requirements for IMS 13 Chapter 3 Accessing IMS 17 Accessing IMS from Application Programs 17Accessing IMS from Other Products 22 Chapter 4 IMS and z/OS 27 How IMS Relates to z/OS 27Structure of IMS Subsystems 28Running an IMS System 43Running Multiple IMS Systems 44How IMS Uses z/OS Services 45 Chapter 5 Setting Up and Running IMS 49 Installing IMS 49Defining an IMS System 51IMS Startup 51IMS Logging 54IMS Utility Programs 54IMS Recovery 55IMS Shutdown 56 Part II IMS Database Manager 59 Chapter 6 Overview of the IMS Database Manager 61 Functions of the IMS Database Manager 61Implementation of IMS Databases 62Storing Data in IMS and DB2 UDB for z/OS 64Storing XML Data in IMS 65 Chapter 7 Overview of the IMS Hierarchical Database Model 67 IMS Hierarchical Database Basics 68Basic Segment Types 72Sequence Fields and Access Paths 73 Chapter 8 Implementing the IMS Hierarchical Database Model 83 Segments, Records, and Pointers 84IMS Hierarchical Access Methods 87Operating System Access Methods 109IMS Checkpoints 111Locking Data 114 Chapter 9 Data Sharing 119 How Applications Share Data 120DBRC and Data Sharing 121 Chapter 10 The Database Reorganization Process 123 Purpose of Database Reorganization 124When to Reorganize Databases 124Overview of the Database Reorganization Process 128 Chapter 11 The Database Recovery Process 151 Determining When Recovery Is Needed 151Overview of the Database Recovery Process 152IMS Backup and Recovery Utilities 153 Part III IMS Transaction Manager 167 Chapter 12 Overview of the IMS Transaction Manager 169 IMS TM Control Region 170IMS TM Messages 171IMS Transaction Flow 173IMS TM Network Overview 175The Data Communication Control (DCCTL) Environment 189Operating an IMS Network 190 Chapter 13 How IMS TM Processes Input 195 Input Message Types 195Terminal Types 197Input Message Origin 197Terminal Input Destination 197Message Queuing 198Message Scheduling 206Transaction Scheduling 208 Part IV IMS Application Development 215 Chapter 14 Application Programming Overview 217 Java Programs 218Application Program Structure 218IMS Setup for Applications 230IMS Application Programming Interfaces 235IMS Application Calls 235Accessing DB2 for z/OS Using a Resource Translation Table 237IMS System Service Calls 237Testing IMS Applications 239 Chapter 15 Application Programming for the IMS Database Manager 241 Introduction to Database Processing 241Processing a Single Database Record 246COBOL and PL/I Programming Considerations 261Processing Databases with Logical Relationships 265Processing Databases with Secondary Indexes 267Loading Databases 269Using Batch Checkpoint/Restart 275 Chapter 16 Application Programming for the IMS Transaction Manager 281 Application Program Processing 281Transaction Manager Application Design 289 Chapter 17 Editing and Formatting Messages 297 Message Format Service 298Basic Edit Function 308 Chapter 18 Application Programming in Java 311 Describing an IMS Database to the IMS Java Function 312Supported SQL Keywords 313Developing JMP Applications 314Developing JBP Applications 315Enterprise COBOL Interoperability with JMP and JBP Applications 316Accessing DB2 UDB for z/OS Databases from JMP or JBP Applications 317Developing Java Applications That Run Outside of IMS 317XML Storage in IMS Databases 321 Part V IMS System Administration 327 Chapter 19 The IMS System Definition Process 329 Overview of the IMS System Definition Process 330IMS System Definition Macros 335The Extended Terminal Option (ETO) 338 Chapter 20 Customizing IMS 347 What You Can Customize 348Naming the Routines 349Changeable Interfaces and Control Blocks 349IMS Standard User Exit Parameter List 349Binding the Routines 349Saving Registers 350IMS Callable Services 350Considering Performance 351Summary of IMS Exit Routines 352 Chapter 21 IMS Security 361 History of IMS Security 361Security Overview 361Securing Resources 363 Chapter 22 IMS Logging 367 IMS System Checkpoints 367Database Recovery Control Facility (DBRC) 368IMS Log Components 368 Chapter 23 Database Recovery Control (DBRC) Facility 375 Overview of DBRC 376DBRC Tasks 376DBRC Components 377When Should You Use DBRC? 378Communicating with DBRC 379DBRC Functions 381Overview of the RECON Data Sets 395Defining and Creating the RECON Data Sets 398Initializing the RECON Data Sets 399Allocating the RECON Data Sets to an IMS System 400Maintaining the RECON Data Sets 401Reorganizing RECON Data Sets 403Recreating the RECON Data Sets 404Summary of Recommendations for RECON Data Sets 404 Chapter 24 Operating IMS 405 Monitoring the System 405Processing IMS System Log Information 406Choosing Tools for Detailed Monitoring 413Executing Recovery-Related Functions 419Modifying and Controlling System Resources 421Controlling Data Sharing 428Controlling Log Data Set Characteristics 431Connecting and Disconnecting Subsystems 436 Chapter 25 IMS System Recovery 439 Overview of Extended Recovery Facility (XRF) 440Overview of Remote Site Recovery (RSR) 440Comparison of XRF and RSR 441Summary of When to Use XRF or RSR 442 Chapter 26 IBM IMS Tools 443 Database Administration Tools 443Application Management Tools 447Performance Management Tools 450Recovery Management Tools 452Information Integration Management Tools 455Utilities Management Tools 456TM Management Tools 461Miscellaneous IMS Tools 463 Part VI IMS in a Parallel Sysplex Environment 465 Chapter 27 Introduction to Parallel Sysplex 467 Goals of a Sysplex Environment 468IMS and the Sysplex Environment 469Other Advantages of Running IMS TM in a Sysplex Environment 485 Chapter 28 IMSplexes 495 Components of an IMSplex 496Requirements for an IMSplex 498Operating an IMSplex 499 Part VII Appendixes 501 Appendix A Glossary 503 Appendix B Acronyms and Abbreviations Used in This Book 511 Appendix C Notices 517 Appendix D Bibliography 521 Index 525

Product Details

  • ISBN13: 9780132659529
  • Format: Paperback
  • Number Of Pages: 592
  • ID: 9780132659529
  • weight: 912
  • ISBN10: 0132659522

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