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The latest version of RPG called RPG II greatly improved the language and gave it additional capabilities. The programmer simply indicates the options within the master program that are to be used. RPG is considerably different from other programming languages. The name stands for report program generator. Yet, although PL/I is one of the most versatile and the most powerful of the programming languages, it is not the most commonly used. PL/I is much more than a combination of the good features of both COBOL and FORTRAN, as it has many capabilities that are unique. It was designed as a general-purpose language incorporating features similar to COBOL for data handling instructions and features similar to FORTRAN for mathematical instructions. FORTRAN is the most commonly used language for scientific applications. Any formula or those mathematical relationships that can be expressed algebraically can easily be expressed as a FORTRAN instruction. The version of FORTRAN IV was designed as algebra-based programming language. The name FORTRAN comes from the combination of the words formula translation. The FORTRAN IV language is oriented toward solving problems of mathematical nature. With a field-name length to 30 characters, the name can clearly identify the field and its purpose. The self-documenting aspect of COBOL is made possible by its sentencelike structure and maximum symbolic field-name length of 30 characters. Self-documenting languages are those that do not require a great deal of explanation in order to be understood by someone reading the program instructions. COBOL was also designed as a self-documenting language. COBOL can perform arithmetic operations as well, but its greatest flexibility is data handling. It was designed to solve problems that are oriented toward data handling and input-output operations. Its name is an acronym for Common Business- Oriented Language. The most common of them are COBOL, FORTRAN, PL/I, RPG, BASIC, PASCAL.ĬOBOL was the most widely used business-oriented programming language. There are a lot of programming languages. A programming language must convey the logical steps of the program plan in such a way that the control unit of the CPU can interpret and follow the instructions. These rules are the foundation of a programming language. The instructions must be written according to a set of rules.