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IBM i Objects

IBM i Objects
IBM i Objects, object name, qualified object name, generic object name, as400, ibmi
IBM i Objects

Objects

An object occupies storage on which operations are performed by OS. IBM i objects are the basic units on which commands perform operations. For example, programs, files, and data areas, etc are objects. Objects have a simple, qualified, or generic name. Objects are independent of all other objects. However, some objects must be created or deleted before other objects get created or deleted such as a Logical file cannot be created unless its basing physical file is not created/ Physical files cannot be deleted unless its dependent logical files are not deleted first.

Supported Object types

There are various types of objects that are supported in IBM i and some of the commonly used object types are listed here.

  1. Files
  2. Programs
  3. Commands
  4. Libraries
  5. Service programs
  6. Modules
  7. Queues
  8. User profiles
  9. Job descriptions

Identify object

Each object has a name and is assigned by the creator and the object type is determined by the command used to create the object. Object name and object type are used to identify an object. For Example, the object name is OBJ1 and the type is *PGM and another object name is the same as OBJ1 but the type must be different i.e. *FILE.

Library objects

A library is an object that is used to group related objects and to find objects by name when they are used. Therefore, the library is a directory to the objects.

You can read more about the library here.

External object types

They are stored in libraries. Some of them can only be stored in IFS directories. Some object types can only be created in specific libraries.

Some of the object types are listed here.

*AUTL

The authorization list and default library are QSYS.

*BNDDIR

The binding directory and default library are *CURLIB.

*CHRSF

Character Special File and default directory is Current directory.

*CMD

Command and default library is *CURLIB.

*DIR

The directory and default directory are the current directories.

*DTAARA

Data Area and default library are *CURLIB.

*DTAQ

Data Queue and default library are *CURLIB.

*FILE

The file and default library is *CURLIB.

*JOBD

Job Description and default library are *CURLIB.

*JOBQ

Job Queue and default library are *CURLIB.

*JRN

Journal and default library is *CURLIB.

*JRNRCV

Journal Receiver and default library are *CURLIB.

*LIB

The library and default library is QSYS.

*MODULE

Module and default library is *CURLIB.

*MSGF

Message File and default library are *CURLIB.

*MSGQ

Message Queue and default library are *CURLIB.

*OUTQ

Output Queue and default library are *CURLIB.

*OVL

Overlay and default library is *CURLIB.

*PGM

Program and default library is *CURLIB.

*PNLGRP

Panel Group and default library are *CURLIB.

*QMFORM

Query Management Form and default library are *CURLIB.

*QMQRY

Query Management Query and default library are *CURLIB.

*QRYDFN

Query Definition and default library are *CURLIB.

*SRVPGM

The service program and default library are *CURLIB.

*STMF

ByteStream File and default directory is the current directory.

*USRPRF

User Profile and default library are QSYS.

*USRSPC

User Space and default library are *CURLIB.

Qualified object name

A qualified object name is the name of the library where the object is stored followed by the name of the object and separated by a slash (/).

Simple object name

Object name (OBJ1)

Qualified object name

library name/Object name (LIB1/OBJ1)

Generic object name

Generic object names can be used when referring to multiple objects with similar names. It can refer to more than one object. For Example, OBJ*. The system will look for each object starting with the name OBJ.

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