Monday, June 24, 2019

Compare and contrast different software life- Research Paper

Compare and contrast different software life- - Research Paper ExampleThere are several life-cycle models that have been suggested including waterfall, Agile, reiterative model, prototype model, spiral model etc., each with its different strengths and weaknesses (Thayer, 2005). Moreover, differences exist the way software is developed in theory and in practice. Considering these factors, for a software discipline organization to make an informed decision on the most appropriate life-cycle model for the particular, organization, the staff and the software process, it is imperative to make a comparative outline of various life-cycle models (Schach, 2011). This paper therefore, strives to compare and contrast the features and defects of waterfall, Agile, Iterative model, prototype model, and spiral model in order to show the advantages and disadvantages of each. Waterfall Model The idea potty this model is that a subsequent phase keister only be initiated upon completion of the pr evious phases and at the end of each phase or stage, a review is carried out to determine if the project is on course or whether to discontinue or discard the project (Munassar and Govardhan, 2010). The model follows a sequential draw close that flows progressively from top to bottom passing through the five stages of the SDLC which include the requirements analysis and maintenance among others. The Waterfall model has various advantages most notably existence its ease of use given its popularity among software developers. Moreover, the model is very efficient when working on small projects where requirements are very well understood. The model is besides very cost-effective since more time is spent to make sure that all requirements are cl proterozoic understood at the earlier stages, which ensure that there remains no need to conduct risk analysis at later stage, which would be more expensive. On the other hand, the model has various drawbacks, the superlative being that once an phase has been initiated, it is impossible to go back to previous stages. For example, is mistakes are made at the design stage, but the situation can nourish very coordination compound at the implementation level. The client does not have access to the software until it is completed and therefore any changes he might motivation made during the process may cause problems. Another disadvantage is that the model comes with high amounts of risk and uncertainty, inflexibility and it is generally a poor model for complex and object-oriented projects (Munassar and Govardhan, 2010). Considering these features, the Waterfall model is an appropriate life-cycle model for projects that have clear and well-understood requirements, design and technical tools and infrastructure. Spiral model In the spiral life-cycle model, a lot of violence is put on risk analysis and decreasing project risk by disintegrating it into smaller subdivisions. In addition, the model has a greater level of soci al function of the client unlike the Waterfall model since reevaluation is carried out every time a new prototype is introduced. Errors are consequently done away with during the early stages of project development only leading to proper control over time and manpower requirement for the development process (Sharma, Sharma and Mehta, 2012). Budget and time estimates can also be made in way that is more realistic because the crucial issues are discovered during the initial

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