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File Number S360-30
Form C24-3427-3 DOS
Systems Reference Library
IBM System/360
Disk Operating System
Data Management Concepts
This reference publication contains a discussion
of the data management facilities inherent in the
Disk Operating System. It describes the file
formats, labeli.ng procedures, and access methods
available with the system. There is also a
general section describing the design of the
direct-access storage devices supported.
The following publications are recommended as
prerequisite re!adings:
1. IBM System/360 Principles of Operation, Form
A22-6821.
2. IBM Systeml:360 Disk Operating System, System
Control and System Service Programs, Form
C24-5036.
Other related publications are:
1. IBM Systeml360 Disk Operating System
Supervisor and Input/Output Macros, Form
C24-5037.
2. IBM Systernl360 Disk and Tape Operating Systems
Assembler S~cifications, Form C24-3414.
3. Glossary for Information Processing, Form
C20-8089.
For a list of associated Systern/360
publications, refer to IBM System/360
Bibliography, Form A22-6822.
Major Revision (February 1968)
This edition, Form C24-3427-3, is a major revision
of, and obsoletes Form C24-3427-1 and Form
C24-3427-2. It also obsoletes the following
Technical Newsletters: N24-5122, N24-5169,
N24-5197, N24-5276, and N24-5291. Changes are
designated in three ways:
1. A vertical line appears to the left of
affected text where only part of the page has
been changed.
2. A dot (.) appears to the left of the page
number where the complete page should be
reviewed.
3. A dot (.) appears to the left of the title of
each figure that has been changed.
Specifications contained herein are subject to change from time to time.
Any such change will be reported in subsequent revisions or TeChnical
Newsletters.
Requests for copies of IBM publications should be made to your IBM
representative or to the IBM branch office serving your locality.
A form is provided at the back of this publication for readers'
comments. If the form has been removed, comments may be addressed to
IBM Corporation, Programming Publications, Endicott, New York 13760.
C International Business Machines Corporation 1965
Form C24-3427-3, Page modified by TNL N24-5349, May 6, 68
CONTENTS
DATA MANAGEMENT CONCEPTS . . .