| AG |
Activation Group |
A partitioning of resources within a job.
An activation group consists of system resources (storage for program or
procedure variables, commitment definitions, and open files) allocated to
one or more programs. |
| API |
Application Programming Interface |
A functional interface supplied by the operating
system or by a separately orderable licensed program that allows an application
program written in a high-level language to use specific data or functions
of the operating system or licensed program. |
| ANSI |
American National Standards Institute |
An organization consisting of producers,
consumers, and general interest groups, that establishes the procedures by
which accredited organizations create and maintain voluntary industry standards
in the United States. |
| ASCII |
American National Standard Code for Information
Interchange |
The code developed by American National Standards
Institute for information exchange among data processing systems, data communications
systems, and associated equipment. The ASCII character set consists of 8-bit
characters, consisting of 7-bit control characters and symbolic characters,
plus one parity-check bit. |
| CICS(R)(R) |
Customer Information Control Service |
An IBM(R) licensed program that enables transactions
entered at remote work stations to be processed concurrently by user-written
application programs. The licensed program includes functions for building,
using, and maintaining databases, and for communicating with CICS on other operating
systems. |
| CL |
Control Language |
The set of all commands with which a user
requests system functions. |
| DBCS |
Double-Byte Character Set |
A set of characters in which each character
is represented by 2 bytes. Languages such as Japanese, Chinese, and Korean,
which contain more symbols than can be represented by 256 code points, require
double-byte character sets. Because each character requires 2 bytes, the
typing, displaying, and printing of DBCS characters requires hardware and
programs that support DBCS. Four double-byte character sets are supported
by the system: Japanese, Korean, Simplified Chinese, and Traditional Chinese.
Contrast with single-byte character set. |
| DDM |
Distributed Data Management |
A function of the operating system that allows
an application program or user on one system to use data files stored on remote
systems. The systems must be connected by a communications network, and the
remote systems must also be using DDM. |
| DDS |
Data Description Specifications |
A description of the user's database
or device files that is entered into the system in a fixed form. The description
is then used to create files. |
| EBCDIC |
Extended Binary-Coded Decimal Interchange
Code. |
A coded character set consisting of 256 eight-bit
characters. |
| EPM |
Extended Program Model |
The set of functions for compiling source
code and creating programs on the iSeries system in high-level languages that
define procedure calls. |
| FIPS |
Federal Information Processing Standard |
An official standard to improve the utilization
and management of computers and data processing in business. |
| HLL |
high-level language |
A programming language whose concepts and
structures are convenient for human reasoning; for example, C, COBOL, and
RPG. High-level languages are independent of the structures of computers and
operating structures. |
| OS/400 |
OS/400 |
The iSeries operating system. Formerly OS/400. |
| ICF |
Intersystem Communications Function |
A function of the operating system that allows
a program to communicate interactively with another program or system. |
| ILE |
Integrated Language Environment |
A set of constructs and interfaces that provides
a common runtime environment and runtime bindable application programming
interfaces (APIs) for all ILE-conforming high-level languages. |
| I/O |
Input/Output |
Data provided to the computer or data resulting
from computer processing. |
| LVLCHK |
Level Checking |
A function that compares the record format-level
identifiers of a file to be opened with the file description that is part
of a compiled program to determine if the record format for the file changed
since the program was compiled. |
| ODP |
open data path |
A control block created when a file is opened.
An ODP contains information about the merged file attributes and information
returned by input and output operations. The ODP only exists while the file
is open. |
| ODT |
Object Definition Table |
A table built at compile time by the system
to keep track of objects declared in the program. The program objects in
the table include variables, constants, labels, operand lists and exception
descriptions. The table resides in the compiled program object. |
| OPM |
original program model |
The set of functions for compiling source
code and creating high-level language programs on the iSeries system before the Integrated Language Environment (ILE)
model was introduced. |
| PEP |
program entry procedure |
A procedure provided by the compiler that
is the entry point for an ILE program on a dynamic program call. Contrast
with user entry procedure. |
| SDA |
Screen Design Aid |
A function of the Application Development
ToolSet licensed program that helps the user design, create, and maintain
displays and menus. |
| SEU |
Source Entry Utility |
A function of the Application Development
ToolSet licensed program that is used to create and change source
members. |
| SQL/400 |
Structured Query Language/400 |
An IBM licensed program supporting the relational
database that is used to put information into a database and to get and organize
selected information from a database. |
| UEP |
user entry procedure |
The entry procedure, written by an application
programmer, that is the target of the dynamic program call. This procedure
is called by the program entry procedure (PEP). Contrast with program entry procedure. |
| UPSI |
User Program Status Indicator switch |
An external program switch that performs
the functions of a hardware switch. Eight switches are provided: UPSI 0 -
7. |