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This manual provides programmers with descriptions and examples
of the KSAM XL and KSAM 64 file formats and their accessing routines.
The material is organized into nine chapters and two appendixes.
The "Introduction" describes the KSAM XL and KSAM 64 files,
their indexing mechanism, and their standard recovery methods.
"Creating a KSAM XL or a KSAM 64 File" describes different
methods of creating a KSAM XL or a KSAM 64 file. Standard commands
have been adapted to create and load a KSAM XL or a KSAM 64 file.
Intrinsics are also available to create and open a KSAM XL or a KSAM
64 file. The key characteristics of the files are specified in command
or intrinsic parameters.
"Obtaining File Information" describes the LISTFILE command and two
intrinsics that access file and key characteristics of a KSAM XL file or a
KSAM 64 file.
"Opening and Closing the File" describes the intrinsic opening
and closing routines. Note that a KSAM XL and KSAM 64 files can
also be created at the time the file is opened.
"Reading File Data" provides various methods of accessing
records both sequentially and randomly using different intrinsics.
"Writing and Updating Record Data" provides the intrinsics
that are used to write and append records to a file. File updates
and deletions are also described.
"Protecting the File and Its Data" provides several methods
of maintaining file integrity through error checking routines and
regular file backups. Special information is provided for protecting
data when access is shared. This section also describes recovering
from system and software aborts and from internal file structure corruption.
"Migration and Mixed Mode Processing" offers migration strategies
for transferring CM KSAM files to an MPE/iX system and to the KSAM
XL or KSAM 64 file formats.
"KSAM XL /KSAM 64 Intrinsics" provides all syntax and operation
notes regarding the use of the KSAM intrinsics.
Two appendixes provide COBOL 68 intrinsics and BASIC/V intrinsics
that may be needed for program maintenance. These intrinsics are
not intended for use in new program development. They are provided
here only as a maintenance aid for COBOL 68 or BASIC/V programs.
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