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SH20-9026-8
File No. S370-50
j
IMS/VS Version 1
Application Programming=
Program Product Designing and Coding
Program Number 5740-XX2
Release 2
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This publication was produced using the
IBM Document Composition Facility
(program number 5748-XX9) and
the master was printed on the IBM 3800 Printing Subsystem.
Ninth Edition (March 1981)
This is a major revision of, and makes obsole~e, SH20-9026-7.
This edition,applies to Version 1, Release 2 of IMS/VS, Program (
Product 5740-XX2, and to any subsequent releases and
modifications until otherwise indicated in new editions or
technical newsletters.
The changes for this edition are summarized under "Summary of
Amendment s" fo 11 ow i ng the preface. Spec if; c changes are i nd i cated
by a vertical bar to the left of the change. These bars will be
deleted at any subsequent republication of the page affected.
Editorial changes that have no technical significance are not
noted.
Changes are peri odi cally made to the i nformat i on here in; before
using this publication in connection with the operation of IBM
systems, consult the latest IBM System/370 and 4300'Processors
Bibliography, GC20-0001, for the editions that are applicable and
current.
It is possible that this material may contain reference to, or
information about, IBM products (machines and programs),
programming, or services that are not announced in your country.
Such references or information must not be construed to mean that
IBM intends to announce such IBM products, programming, or
services in your country.
Pub I i cati ons are not stocked at the address gi ven below; requests
for IBM publications should be made to your IBM representative or
to the IBM branch office serving your locality.
A form for reader's comm9nts ;s provided at the back of this
publication. If the form has been removed, comments may be
addressed to IBM Corporation, P.O. Box 50020, Programming
Publishing, S~n Jose, California, U.S.A. 95150. IBM may use or
distribute any of the information you supply in any way it
believes appropriate without incurring any obligation whatever. (
You may, of course, continue to use the information you supply.
~ Copyright International Business Machines Corporation
1974,1915,1976,1977,1978,1980,1981
PREFACE
'This retitled edition supersedes the seventh edition, called the
IMS/VS Version 1 Application Programming Reference Manual. This
manual contains the application programming information from the
previous edition, and additional information on designing IMS/VS
application programs. The application programming information
from the previous edition has been separated into a guidance part
and a reference part to better support application programming.
PREREQUISITE KNOWLEDGE
Before using this manual, you should understand basic IMS/VS
concepts, the IMS/VS environment, and your installation's ,IMS/VS
system. The IMS/VS concepts explained in this manual are limited
to those concepts pertinent to developing and coding IMS/VS
application programs. You should also know how to use COBOL, PL/I,
or assembler language.
HOW THIS BOOK IS ORGANIZED
The manual is divided into three parts. The first and second
pa rt s, "Appl i cat i on Des i gn Gu i de" and "Appl i cat ion P rogramm i ng
Guide," guide you in designing and coding IMS/VS application
programs. The third part, "For Your Reference," contains
reference information about the parts of an IMS/VS application
program. This part is for experienced programmers who understand
IMS/VS application programming and need only to look up facts like
a call format, a command code, or the meaning of a particular
status code.
) Part 1. Application Design Guide
This part contains the following five chapters: