Service Manuals, User Guides, Schematic Diagrams or docs for : IBM 360 os R21.7_Apr73 GC26-3746-2_OS_Data_Management_Services_Guide_Rel_21.7_Jul73

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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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