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File No. S360/370-30
Order No. GC26-3746-2 os
c
Systems Reference Library
OS Data Management Services Guide
Release 21.7
This book describes the services provided by the operating system
that allow the programmer to organize data into data sets on
auxiliary storage devices, to read information from these data sets
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into main storage, and, after processing the information, to record it
on auxiliary storage devices.,
This book is intended for application programmers who write
assembler-language programs that create and process data sets. It
describes the assembler-language macro instructions used to request
input and output operations. The format of the macro instructions
is explained in OS Data Management Macro Instructions,
GC26-3794, which should be used with this book.
In addition to describing the characteristics of data sets and
direct-access storage devices, the book describes the techniques you
can use to process sequential, partitioned, indexed sequential, and
direct data sets.
This book ~ssumes you have a basic knowledge of the operating
system and of assembler language. Two books that contain
information about these subjects are OS Introduction, GC28-6534,
and OS Assembler Language, GC28-6514. It also assumes you
are familiar with job control language, especially the DD statement,
as described in OS Job Control Language Reference, GC28-6704.
This book does not discuss macro instructions used for the time
sharing option or for graphics, teleprocessing, optical character
readers, optical reader-sorters, or magnetic character readers. These
macro instructions are discussed in separate publications that are
listed in the iBjVi Sysiem/'360 and SYl'ie"t/'370 Bibliugi"upliY,
GA22-6822.
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