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Course Catalog » COBOL Programming Curriculum » COBOL Programming Series

Accessing IMS Databases from COBOL

Duration
3 hours

Overview

Description

The Accessing IMS Databases from COBOL course looks at the COBOL coding required to access an IMS database. It describes the DL/I commands and functions used to reference and manipulate IMS data, and shows how a simple COBOL program is written to perform such tasks. An overview of DL/I command codes and status codes is provided along with more detailed IMS database data manipulation techniques. The final module focuses on IMS database recovery methods and COBOL programming considerations.

Audience

COBOL Programmers who need to work with IMS databases.

Prerequisites

The learner should have a solid knowledge of IMS database concepts and methods used to access an IMS database. This content can be obtained from the IMS Database course in the IMS curriculum.

Objectives

After completing this course, the student will be able to:

  • Describe how a COBOL program access an IMS database
  • Code a COBOL program to reference and manipulate IMS database data
  • Describe how IMS Database recovery is performed following a COBOL program error

Course Content

Introducing DL/I

DL/I Functions

PCB Mask

Segment I/O Area

SSAs

Produce a DL/I Call

Coding a Simple COBOL DL/I Batch Program

Extended DL/I Functions

DL/I Command Codes

DL/I Status Codes

How to Delete and Replace Segments

How to Access Lower Levels in a Hierarchy

Secondary Indexing

Logical Databases

IMS Backout and Recovery

Recovery Concepts and Procedures

Restart Concepts and Procedures

Accessing IMS Databases from COBOL Mastery Test

Course Catalog » COBOL Programming Curriculum » COBOL Programming Series
 
 
 
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