AS/400 AS/400 The Application System/400 (AS/400), renamed to iSeries in 2000, is an IBM minicomputer for general business and departmental use, introduced in 1988 and still in production under the names iSeries and i5. The AS/400 is an object-based system with an integrated DB2 database that was designed to implement E. F. Codd's relational database model, which is based on Codd's 12 rules, in the operating system and hardware. All software necessary to run this computer is included and integrated. More than 2,500 business software applications were available when the first AS/400 was delivered in 1988. ...more on Wikipedia about "AS/400"
The AS/400 control language (CL) is reminiscent of JCL and consists of an ever expanding set of command objects (*CMD) used to invoke traditional AS/400 programs and/or get help on what those programs do. CL can also be used to create CL programs (congruent to shell scripts) where there are additional commands that provide program-like functionality (GOTO, IF/ELSE, variable declaration, file input, etc.) ...more on Wikipedia about "AS/400 Control Language"
A library (*LIB) on the AS/400 is an object that is used as a system directory to keep track of other objects. (It is also keeps track of PTFs in AS/400 system libraries.) (The other directories that can be used are the directory (*DIR) and folder (*FLR) objects.) ...more on Wikipedia about "AS/400 library"
Most systems have a way to find objects when a specific path is not specified. The same is true of the AS/400 and it uses an object called the library list (*LIBL). This object doesn't exist on its own and is always associated with another object like a job or a job description (*JOBD). As of OS/400 V5R1 the user portion of the Library List can contain up to 250 library names. Prior to that it could only have 25 libraries. (This is something to keep in mind when selling software because on OS/400 V4R5 and below a job description with more than 25 libraries in its library list cannot be restored.) ...more on Wikipedia about "AS/400 Library List"
On most other platforms everything is a file. On the AS/400 everything is an object. This would on the surface seem to be the same as object-oriented programming, but with the AS/400 it's different. The similarity is that when storage is allocated for something, that something is of a specific type, and only a specific set of programs are allowed to act upon that object. The dissimilarity is that even though the AS/400 supports Java and C++, these objects cannot be inherited like the classes in those languages. ...more on Wikipedia about "AS/400 object"
OS/400 is an operating system used on IBM's line of AS/400 (now called iSeries) minicomputers. OS/400 and AS/400 were introduced in 1988. The latest version of OS/400 is now called i5/OS or V5R3. ...more on Wikipedia about "OS/400"
This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from
the Shortopedia article about "AS/400".
| MAIN PAGE | MAIN INDEX | CONTACT US |