Software is a set of coded instructions that enable the user to interact with a computer and it’s hardware to perform various tasks. Without software, hardware is of no use. For example, without your Internet browser, you could not surf the Internet or read this page and without an Operating System, the browser cannot run on your computer. The software can be of various types such as Application software, System software, etc. The picture below shows a Microsoft office box, an example of Application software.
A software development process is a serialized set on the development of a software product. There are different models for software development processes, each describing different techniques to a variety of tasks or activities that take place during the process. This are the set of steps of any module of software.
First of all, in the software development process, the requirements or necessity phase outlines the goals of what the program will be able of doing. Second, the design phase refers how the program is going to be created or develop, who will be doing what etc. Like that, in the implementation phase the programmers and other designers or workers start work on the program according to the rule or formula. After the designers have a working copy, the developers evaluating that copy and verification step can begin to help verify the program has no errors. During the testing period, problems are fixed, until the program meets the company’s quality controls. After that, on the documentation phase how to use the program can be completed. Completely, updating the program must continue for several years after the primarily release.
A software development process makes easier for everything and reduces the number of problems encountered. Most of the companies and government agencies and non-government agencies need different types of software development process. The software development process is to provide desire discipline to give a quality able product for business success and to diminish wastes of time, economical value, labor costs, and demoralization in developers and so on. The standard process of software development are as follow:
Requirements analysis is the first process in software development life cycle. In this process, all necessary materials, resources, and manpower are allocated for the project. Budget for the whole process is estimated by the managerial level employee. All the expectations from the software are explored in this phase of software development.
Software design is the process of implementing software solutions to one or more sets of problems. One of the main components of software design is the software requirements analysis (SRA). In this phase, the design of the product gets finalized. Software design usually involves problem-solving and planning a software solution. This includes both a low-level component and algorithm design and a high-level, architecture design.
Implementation is the process that actually yields the lowest-level system elements in the system hierarchy. System elements are made, bought, or reused. Production involves the hardware fabrication processes of forming, removing, joining, and finishing, the software realization processes of coding and testing, or the operational procedures development processes for operators’ roles. If implementation involves a production process, a manufacturing system which uses the established technical and management processes may be required.
Testing is the most important phase of software development life cycle. In this phase, the software is tested until its limit. Various types of testing such as Unit testing, Component testing, Alpha testing, Integration testing etc are carried out in this phase. Error in the software is recorded and is again sent to the development team to fix it.
Software evolution refers to developing software initially and then gradually developing with further features and updates. It is also an important phase of the software development life cycle.
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