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| − | [[Category:Programming]] | + | #REDIRECT [[Category:RPG]] |
| − | [[Category:RPG]]
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| − | '''RPG''', which stands for ''Report Program Generator'', is an easy to learn and understand programming language that is well suited for developing business applications.
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| − | Programmers, coming to RPG from other programming environments, will still need to get some education to familiarize themselves with its capabilities, and how it functions.
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| − | There are four major versions of RPG currently in use... [[RPG II]], [[RPG III]], [[RPG 400]], and [[RPG 4]] (sometimes referred to as [[ILE]] RPG).
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| − | The [http://lists.midrange.com/listinfo/rpg400-l RPG400-L] mailing list hosted by [[midrange.com]] is for discussion of RPG programming.
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| − | [[RPG]] is available only on [[IBM Midrange]] platforms, this is because the technology has evolved over many years to leverage operating system resources.
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| − | [[OS/400]] contains extensive support for debugging and run-time identification of [[RPG]] code. There is a large established base of [[RPG]] code in production environments, usually performing heavy-lifting batch-oriented data tasks, or providing support for interactive [[ERP]] applications, either with native [[5250]] interface or with a [[GUI]] or Web [[Skin]] applied over the [[5250]] data stream.
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| − | == RPG vs. other languages ==
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| − | Compared to other programming languages, RPG is especially strong in
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| − | * transactional processing;
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| − | * data base access, such as [[DB2]];
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| − | The main perceived flaw with RPG is that it is not object oriented, nor does it contain direct support for [[GUI]] Graphical User Interface.
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| − | Although RPG from IBM is perceived as not having tood GUI support, there are [[RPG Third Party]] offerings to fill that gap.
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| − | === RPG vs. Java ===
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| − | A comparison between [[RPG]] and [[Java]] can be made so long as [[Java]] is used in a developer framework or one of the available [[application servers]]. Unlike Java, however [[RPG]] contains language-level features for common business tasks such as database access.
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| − | === Objects and RPG ===
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| − | Although RPG is perceived as not being object-oriented, the 400 is composed entirely of objects that can be manipulated by RPG and other languages on the 400.
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| − | Many versions of RPG, for a long time, have had the capability of importing standardized blocks of code to do standard functions, such as via [[/COPY]]. Also several versions or RPG support [[CALL]] a sub-program, thus many aspects of object management are represented within RPG.
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