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#4GL PROGRAMMING LANGUAGE LIST SOFTWARE#
#4GL PROGRAMMING LANGUAGE LIST CODE#

Generation of parts or entire software systems from application-specific models of the industry, eg with AUTOSAR.

Each of the programming language generations aims to provide a higher level of abstraction of. This then hundreds of thousands of COBOL program lines were generated. A fourth-generation programming language (4GL) is any computer programming language that belongs to a class of languages envisioned as an advancement upon third-generation programming languages (3GL).

Total systems capable of managing the details of CASE systems and generate input generators and further specification of process logic all systems and report.Īn example of this is the tool of Information Engineering James Martin, which allows to capture the results of system analysis and system design (in the form of data flow diagrams, entity-relationship diagrams and entity life-cycle diagrams). 4GL programmers need to specify the algorithm in order to solve a problem, whereas 5GL programmers only need to define the problem and constraints that need to be satisfied.

As a result, a reduction in development time and cost.

Better maintainability and extensibility of the programs through better readability and user-friendly presentation.

Reducing the development effort through the use of comprehensible, application-oriented paradigms.

This interpretation comes but only in recent times with the model-driven software development really apply. He used it first in his 1982 book Application Development Without Programmers ( " application development without programmers "). The term 4GL was highly touted by James Martin. Since this could not be clearly assigned to the high third-generation languages , these were often already called 4GL language, which was not a distinction between the actual "language" and the system that can interpret such language. In most successful cases, there was a so-called visual language. The following object-oriented programming languages such as C and Java made great improvements in the software structure with itself.Īt the same time created more and more graphical editors that have been optimized in their semantics for certain applications, to simplify the access to the associated libraries. This was followed by the creation of extensive libraries with additional modules, such as often occur in specialized applications. In the first third-generation languages (eg, Fortran, Pascal, and C) was the introduction of standardized control structures in the foreground.

So-called parser generators such as X2X allow for any purpose to define its own scripting language and transform the scripts created with it in the source code of a high-level language of the third generation.Īs an application-specific scripting language essentially always used to define a specific model of a specific topic, it is called here lately, increasingly, from model- centric software development and model- driven software development. That is, the actual 4GL is used to specify a system that in turn can interpret a specific script language. It now appears more and more that application-specific scripting languages are just the input for a 4GL language. Later the term Rapid Application Development (RAD ) has been applied with overlapping semantics. The term was often used in the 1980s, often fixed to a particular topic, application-specific script or query languages such as SQL are called 4GL languages. The common main aim of all 4GL, however, is to achieve the same functionality with less code compared with third-generation languages . The term 4GL is not precisely defined and is used primarily for marketing purposes. These are aimed at quickly - to write for a specific application functions or entire applications - with as few lines of code. The concept of 4GL was developed from the 1970s through the 1990s, overlapping most of the development of 3GL, with 4GLs identified as "non-procedural" or "program-generating" languages, contrasted with 3GLs being algorithmic or procedural languages.As a fourth generation language or short 4GL programming languages or programming environments is called the fourth generation. Some researchers state that 4GLs are a subset of domain-specific languages. Languages claimed to be 4GL may include support for database management, report generation, mathematical optimization, GUI development, or web development. While the definition of 4GL has changed over time, it can be typified by operating more with large collections of information at once rather than focusing on just bits and bytes. Each of the programming language generations aims to provide a higher level of abstraction of the internal computer hardware details, making the language more programmer-friendly, powerful, and versatile. A fourth-generation programming language is any computer programming language that belongs to a class of languages envisioned as an advancement upon third-generation programming languages.

#4GL PROGRAMMING LANGUAGE LIST CODE#