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The original Progress 4GL was designed in 1981 as an architecture-independent language and integrated database system that could be used by non-experts to develop business applications by people who were not computer scientists but were knowledgeable in their business domain.
The development of the 4GL was influenced by several factors, with the hardware and operating system constraints having a large weight. When the 4GL was first introduced, a disparate mix of hardware and operating systems mandated custom application development support that was specific to the system in order to ensure sales.
Progress Software Corporation is an American public company that produces software for creating and deploying business applications. Founded in Burlington, Massachusetts with offices in 16 countries, the company posted revenues of $531.3 million (USD) in 2021 and employs approximately 2100 people.
QAD Inc. is a software company that provides enterprise resource planning (ERP) software and related enterprise software to manufacturing companies. The company has customers in over 100 countries around the world.
An interactive environment in which any 4GL statement may be typed and immediately processed (comparable to interactive tools like PHP or Perl) Relational database features, supporting lookup tables and the other elements of a normalized relational database; Powerful set-at-a-time operations under the control of simple imperative commands
This product was launched in January 1990 as a multiprocessor-capable SPARC-based server, running ICL's implementation of Unix System V Release 4 . [10] It replaced the DRS 500 models in ICL's line-up, with two models available at launch: the Level 40 with 25 MHz CPU and 16 MB of RAM fitted, and the Level 50 with 33 MHz CPU and 32 MB of RAM fitted.
Decision tables can be used as an aid to clarifying the logic before writing a program in any language, but in the 1960s a number of languages were developed where the main logic is expressed directly in the form of a decision table, including: Filetab
SheerPower 4GL has several key features: It is free for hobbyists and non-profit organizations. Web scripting features make it fast and easy to develop dynamic web pages using SheerPower's BASIC-like syntax. [3] Version 5.0 was the official release containing the syntax and logic for web scripting in SheerPower.