Graphic fourth-generation language (4GL) and application generation system thereof

Abstract

The invention discloses an application generation system of a graphic fourth-generation language (4GL) and a development method thereof, and provides a two-dimensional information system support platform to execute different organization environments, development environments or operation environments. A double-layer development frame with separated data and functions is adopted, the bottom part is a data layer and the upper part is a function layer, the characteristics of the 4GL are maximally developed, the application space is extended, the business function is described by business models instead of traditional software programs, and explanation is executed by the platform during operation; each business model is composed of a business process, a plurality of customized types, basic lists and generation lists, and the whole system is completely graphical. The invention provides the application generation system by using the graphic fourth-generation language as the development basis, the advantages that the 4GL is simple, efficient, reliable and prone to maintain can be furthest embodied, and meanwhile beneficial supplement is implemented for the defect that the 4GL is completely non-procedural and high in operation cost.

Description

technical field [0001] The invention belongs to the field of computer application software, and in particular relates to a graphics fourth-generation language (G4GL) application generation system. Background technique [0002] With the outbreak of the software crisis in the 1960s, the science of software engineering has sprung up. After more than half a century of development, it has brought a series of profound changes to the software system development and maintenance process, and achieved remarkable results. To overcome the software crisis made a great contribution. [0003] However, with the rapid development of information technology and the Internet, the degree of social informatization continues to increase, and the contradiction between software supply and demand has further deteriorated. The reasons are as follows: [0004] 1. The demand for software is personalized and diversified, and the market space is rapidly expanding, especially the establishment of the goal...

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Problems solved by technology

[0005] 2. The development process and characteristics of information systems are non-quantitative, which makes some technologies and principles in software engineering far inferior when applied to information system development, and its differentiated problem space and endless Individual needs are always the bottleneck restricting the efficiency and quality of software development

[0006] 3. Traditional software engineering is based on a long software life cycle, and software development is purely labor-intensive, resulting in limited development efficiency

[0011] 1. 4GL itself is a non-procedural language, does not have the ability to describe the process, and it is difficult to implement complex applications;

[0012] 2. Due to the high level of abstraction, it is not only difficult to control the bottom layer, but also has a large operating cost;

[0013] 3. At present, there is a lack of unified industrial standards, which affects the transplantation and promotion of application software products;

[0014] 4. At present, it is mainly used for data processing, not suitable for scientific computing, real-time system and system software development

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