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In software engineering, the laws of software evolution refer to a series of laws that Lehman and Belady formulated starting in 1974 with respect to software evolution. [1] [2] The laws describe a balance between forces driving new developments on one hand, and forces that slow down progress on the other hand. Over the past decades the laws ...
In the early 1970s, companies began to separate out software maintenance with its own team of engineers to free up software development teams from support tasks. [1] In 1972, R. G. Canning published "The Maintenance 'Iceberg '", in which he contended that software maintenance was an extension of software development with an additional input: the existing system. [1]
Software maintenance addresses bug fixes and minor enhancements, while software evolution focuses on adaptation and migration. Software technologies will continue to develop. These changes will require new laws and theories to be created and justified. Some models as well would require additional aspects in developing future programs.
Architecture evolution is the process of maintaining and adapting an existing software architecture to meet changes in requirements and environment. As software architecture provides a fundamental structure of a software system, its evolution and maintenance would necessarily impact its fundamental structure.
Software entropy describes a tendency for repairs and modifications to a software system to cause it to gradually lose structure or increase in complexity. [11] Manny Lehman used the term entropy in 1974 to describe the complexity of a software system, and to draw an analogy to the second law of thermodynamics .
Download as PDF; Printable version; In other projects ... Pages in category "Software maintenance" ... Software brittleness; Software evolution; Software maintainer ...
The following outline is provided as an overview of and topical guide to software engineering: Software engineering – application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software; that is the application of engineering to software. [1]
The patterns of evolution were developed by Altshuller as a set of patterns common to systems as they are developed and as they acquire new features. They are used in systems development and apply to all systems and are used for education, software, economics, business. Evolution of useful functions; Elimination of harmful functions