Literature Review(Case study) 1
The waterfall Model is first practised or established by Winston Royce which can be defined as the sequential software development model which one phase ends then the next phase begins. This was being used in 1969 to describe a model in software development, when large software systems had become too difficult to build using informal approaches. Phases take place sequentially and the electrically powered waterfall model do not allow developers to go back to earlier phases. It's named the waterfall because it simulates falling water that it can't go up.
Figure 1: MARGARET R.(2019).Next-generation-Agile-Guide-to-continuous-development [Techtarget] Available from: https://searchsoftwarequality.techtarget.com/essentialguide/Next-generation-Agile-Guide-to-continuous-development [Accessed on 09/03/2020]
In 1970 Dr. Winston W. Royce first described the waterfall model with respect to application development. Figure 1 displays the electrically powered waterfall of Royce which includes the following steps: software requirements, analysis, programme design, coding, checking/testing,
operations/deployment and maintenance. The work by Royce did describes the "waterfall," but did not use the word to describes it, it was further describes in the future. An unmodified waterfall does not permit iteration ( the process that enables developers to move to be previous phase even thou after completion), It positions the earlier measures at a strong planning liability. However, since each corresponding move can not begin until the preceding stage ends, any failures in recent phases ripple through to later phases. However, Royce's paper was a review of the concept built on the model seen above, the design mentioned above is dangerous and calls for failure. Updated version is necessary in the actual world so it is not practical to preclude a return to previous phases. Royce brought up the issue of a basic concept flaw found during the evaluation stages.
The testing process at the final moment of the development period is the first process to undergo pacing, input / output transitions as distinct from evaluated. Those conditions can not be studied accurately. Nonetheless, should such conditions struggle to fulfil the particular external requirements, then a significant redesign is inevitably necessary.
Reference:
ERIC. C and JOSHUA F.(2012) Spiral Model. 2nd Edition. Available from: https://www.sciencedirect.com/topics/computer-science/waterfall-model [Accessed on 09/03/2020]
Figure 1: MARGARET R.(2019).Next-generation-Agile-Guide-to-continuous-development [Techtarget] Available from: https://searchsoftwarequality.techtarget.com/essentialguide/Next-generation-Agile-Guide-to-continuous-development [Accessed on 09/03/2020]
Figure 1: MARGARET R.(2019).Next-generation-Agile-Guide-to-continuous-development [Techtarget] Available from: https://searchsoftwarequality.techtarget.com/essentialguide/Next-generation-Agile-Guide-to-continuous-development [Accessed on 09/03/2020]
In 1970 Dr. Winston W. Royce first described the waterfall model with respect to application development. Figure 1 displays the electrically powered waterfall of Royce which includes the following steps: software requirements, analysis, programme design, coding, checking/testing,
operations/deployment and maintenance. The work by Royce did describes the "waterfall," but did not use the word to describes it, it was further describes in the future. An unmodified waterfall does not permit iteration ( the process that enables developers to move to be previous phase even thou after completion), It positions the earlier measures at a strong planning liability. However, since each corresponding move can not begin until the preceding stage ends, any failures in recent phases ripple through to later phases. However, Royce's paper was a review of the concept built on the model seen above, the design mentioned above is dangerous and calls for failure. Updated version is necessary in the actual world so it is not practical to preclude a return to previous phases. Royce brought up the issue of a basic concept flaw found during the evaluation stages.
The testing process at the final moment of the development period is the first process to undergo pacing, input / output transitions as distinct from evaluated. Those conditions can not be studied accurately. Nonetheless, should such conditions struggle to fulfil the particular external requirements, then a significant redesign is inevitably necessary.
Reference:
ERIC. C and JOSHUA F.(2012) Spiral Model. 2nd Edition. Available from: https://www.sciencedirect.com/topics/computer-science/waterfall-model [Accessed on 09/03/2020]
Figure 1: MARGARET R.(2019).Next-generation-Agile-Guide-to-continuous-development [Techtarget] Available from: https://searchsoftwarequality.techtarget.com/essentialguide/Next-generation-Agile-Guide-to-continuous-development [Accessed on 09/03/2020]
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