Overview

Learn how to write application programs that use Data Language One (DL/I) to process Information Management System (IMS) databases.

Audience

This is an intermediate course for individuals who write programs in Common Business Oriented Language (COBOL), or Programming Language One (PL/I), or Assembler language using DL/I to navigate through an process IMS databases.

Prerequisites

You should complete:

• IMS Fundamentals (CM010) or IMS Fundamentals - Web - ILO(CMW01)

and a COBOL or PL/I language course, or be able to:

• List the basic components of the IMS database system
• Construct a non-DL/I application program in COBOL or PL/I

Objective

• Describe the basic differences between files and IMS databases as they relate to application program coding and logic
• Describe the terms and processing characteristics of IMS hierarchic data structures
• Construct DL/I calls for either COBOL or PL/I language programs
• Write, test and debug a batch application program that uses the DL/I call functions
• Use the IMS Test Program to prototype application program calls, and to perform ad-hoc read and update access to an IMS database
• Describe the applications and uses of other DL/I features
• Program for recovery and restart using DL/I calls to establish synchronization points
• Describe the functions provided by High Availability Large Database (HALDB), and any program differences when accessing a Full Function database or a HALDB

Course Outline

• DL/I Environment
• DL/I Call Processing
• DL/I Rtrieval Calls
• DL/I Update Calls
• DL/I Programming Techniques: Part 1
• DL/I Advanced Segment Search Arguments SSAs: Part 1
• DL/I Test Program
• DL/I Programming Techniques: Part 2
• DL/I Advanced Segment Search Arguments SSAs: Part 2
• System Service Calls
• Programming Standards
• High Availability Large Database (HALDB) Access