fourth generation language - определение. Что такое fourth generation language
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Что (кто) такое fourth generation language - определение

4GL-MORE USER FRIENDLY AND NON-PROCEDURAL IN NATURE I.E, USERS NEED TO THINK WHAT NOT HOW
Fourth generation programming language; 4GL; Fourth Generation Language; 4th Generation Language; 4th generation language; Fourth generation language; Fourth-generation language; Commercial business software; 4th-generation programming language; 4gl
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Fourth-generation programming language         
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). 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.
fourth generation language         
<language> (4GL, or "report generator language") An "application specific" language, one with built-in knowledge of an application domain, in the way that SQL has built-in knowledge of the relational database domain. The term was invented by Jim Martin to refer to non-procedural high level languages built around database systems. Fourth generation languages are close to natural language and were built with the concept that certain applications could be generalised by adding limited programming ability to them. When given a description of the data format and the report to generate, a 4GL system produces COBOL (or other 3GL) code, that actually reads and processes the data and formats the results. Some examples of 4GL are: database query language e.g.SQL; Focus, Metafont, PostScript, S, IDL-PV, WAVE, Gauss, Mathematica, and data-stream languages such as AVS, APE, Iris Explorer. (2004-04-01)
4GL         
4GL         
4th Generation Language
Fourth-generation fighter         
  • Zhuk-AE]] [[active electronically scanned array]] radar
  • date=May 25, 2013 }} ''dassault-aviation.com''. Retrieved: 24 April 2010.</ref>
  • The [[Eurofighter Typhoon]] uses jet [[intake]]s that conceal the front of the jet engine (a strong radar target) from radar. Many important radar targets, such as the wing, canard, and fin leading edges, are highly swept to reflect radar energy well away from the front sector.
  • A USAF [[F-15E]] cockpit
  • F-16]] on a mission near Iraq in 2003
  • F-14]] shown here is an example of fly-by-wire control.
  • MiG-29OVT all-aspect [[thrust vectoring]] engine view
  • The OLS-30 is a combined [[IRST]]/[[laser rangefinder]] device.
  • A Polish Air Force [[Mikoyan MiG-29]] with a USAF F-16 Fighting Falcon
CLASSIFICATION OF FIGHTER AIRCRAFT | DESIGNED - WITHOUT AIRFRAME MODIFICATION - TO PERFORM DIFFERENT ROLES IN COMBAT, TYPICALLY BLENDING THE FIGHTER, STRIKE AND GROUND-ATTACK ROLES | C.1970-2000
Comparison of 2000s fighter aircraft; Fourth generation fighter design considerations; Fourth generation fighter jet; 4th generation jet fighter; 4.5th generation fighter aircraft; Fourth-generation jet fighters; Fourth generation aircraft; 4.5 generation jet fighter; 4th generation fighter; Fourth generation jet fighter; Fourth-generation aircraft; Fourth-generation jet fighter; Fourth generation fighter
The fourth-generation fighter is a class of jet fighters in service from around 1980 to the present, and represents design concepts of the 1970s. Fourth-generation designs are heavily influenced by lessons learned from the previous generation of combat aircraft.
Fourth generation of video game consoles         
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  • Neo-Geo
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  • Philips CD-i
  • The North American version of the Super NES (first model)
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  • Second version of the Sega Genesis
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  • TurboGrafx-16
FOURTH VIDEO GAME CONSOLE GENERATION
16-bit era; Fourth generation of gaming; History of video games (Fourth generation era); History of video games (fourth generation era); History of video games (16-bit era); Fourth generation console era; Fourth generation console; Comparison of fourth-generation game consoles; 4th generation of video games; Fourth generation game console; Video game console (fourth generation); Fourth generation of video games consoles; Fourth generation video game console; Fourth generation video game consoles; History of video game consoles (fourth generation); 16-bit console
In the history of video games, the fourth generation of game consoles, more commonly referred to as the 16-bit era, began on October 30, 1987, with the Japanese release of NEC Home Electronics' PC Engine (known as the TurboGrafx-16 in North America). Although NEC released the first console of this era, sales were mostly dominated by the rivalry between Sega and Nintendo across most markets: the Sega Mega Drive (named the Sega Genesis in North America) and the Super Nintendo Entertainment System (SNES; the Super Famicom in Japan).
Natural language generation         
SOFTWARE PROCESS
Text generation; Natural language generater; Natural language generator; Language generation; Applications of natural language generation; Computer-generated literature; Text generator; Image captioning; Automatic image captioning; Natural-language generation; AI-generated text; Evaluation of natural language generation; Sentence generation; Automatic question generation
Natural language generation (NLG) is a software process that produces natural language output. In one of the most widely-cited survey of NLG methods, NLG is characterized as "the subfield of artificial intelligence and computational linguistics that is concerned with the construction of computer systems than can produce understandable texts in English or other human languages from some underlying non-linguistic representation of information".
Fourth-generation warfare         
  • Guerrillas in [[Maguindanao]], 1999
CATEGORIZATION OF CONFLICT
Fourth Generation War; 4GW; Fourth Generation Warfare; 4th generation warfare; Fourth generation warfare; 4th Generation Warfare
Fourth-generation warfare (4GW) is conflict characterized by a blurring of the lines between war and politics, combatants and civilians.
Third-generation programming language         
HIGH-LEVEL COMPUTER PROGRAMMING LANGUAGE
Third Generation Language; 3rd Generation Language; 3rd generation language; Third-generation language; Third generation language; Third generation programming language; Third-level language
A third-generation programming language (3GL) is a high-level computer programming language that tends to be more machine-independent and programmer-friendly than the machine code of the first-generation and assembly languages of the second-generation, while having a less specific focus to the fourth and fifth generations."Computer Hope, Generation languages" Examples of common and historical third-generation programming languages are ALGOL, BASIC, C, COBOL, Fortran, Java, and Pascal.
third generation language         
HIGH-LEVEL COMPUTER PROGRAMMING LANGUAGE
Third Generation Language; 3rd Generation Language; 3rd generation language; Third-generation language; Third generation language; Third generation programming language; Third-level language
<language> (3GL, "high level language") A language designed to be easier for a human to understand, including things like named variables. A fragment might be let c = c + 2 * d Fortran, ALGOL and COBOL are early examples of this sort of language. Most "modern" languages (BASIC, C, C++) are third generation. Most 3GLs support structured programming. See also second generation language, {fourth generation language}. (1996-05-30)

Википедия

Fourth-generation programming language

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). 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. 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. Languages claimed to be 4GL may include support for database management, report generation, mathematical optimization, GUI development, or web development. Some researchers state that 4GLs are a subset of domain-specific languages.

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. While 3GLs like C, C++, C#, Java, and JavaScript remain popular for a wide variety of uses, 4GLs as originally defined found uses focused on databases, reports, and websites. Some advanced 3GLs like Python, Ruby, and Perl combine some 4GL abilities within a general-purpose 3GL environment, and libraries with 4GL-like features have been developed as add-ons for most popular 3GLs, producing languages that are a mix of 3GL and 4GL, blurring the distinction.

In the 1980s and 1990s, there were efforts to develop fifth-generation programming languages (5GL).