CONTENTS

  Title Page

  Copyright Page

  Preface

  1      Integrating Distributed Applications

  Evolution of Distributed Computing

  Trend Toward Client/Server Computing

  Integration Through Interprocess Message Queuing

  Support for Multivendor Environments

  2      Messaging Concepts

  Messaging Basics

  DECmessageQ Architecture

  Message Broadcasting

  Message Selection

  Message Recovery

  3      Programming Services

  Application Programming Interface (API)

  Basic Services

  Extended Services

  Testing and Debugging

  4      DECmessageQ System Management

  System Configuration

  Monitoring System Performance

  Troubleshooting System Problems

  Glossary
    access control list (ACL) . . . attachment point
    blocking . . . configuration file
    confirmation . . . delivery mode
    destination queue file (DQF) . . . full duplex
    global data structure . . . journal file
    journaled guaranteed delivery . . . message queuing group
    Message Recovery Services (MRS) . . . nonblocking
    OS . . . queue address
    queue attribute . . . secondary queue
    Selective Broadcast Services (SBS) . . . synchronous
    target queue . . . VMS
    wait for enqueue . . . wait for enqueue

  FIGURES

  1-1        Application Distribution in Client/Server Computing

  1-2        DECmessageQ Multivendor Support

  2-1        Traditional Integration Versus Message Queuing

  2-2        DECmessageQ Message Broadcasting

  3-1        Common API for All Platforms

  4-1        MONITOR Utility-Character-Cell UI

  TABLES

  1-1        Need for Integrating Distributed Applications

  1-2        Benefits of Using DECmessageQ

  2-1        Multiplatform Queue Types

  2-2        Phases of SBS Broadcasting

  2-3        Message Recovery Files

  2-4        Multiplatform Support for Message Recovery

  3-1        Multiplatform Support for Extended Services

  3-2        Multiplatform Support for the Script Facility