Comparing The Spiral Model And The Waterfall Model

The biggest advantage that Scrum has over Waterfall is the ability for the customer to see and use the software early. Many times customers do not really understand what they want until they are actually using the software so having the software available early allows them to provide feedback immediately. If there are changes to made they can be added to the next sprint and adjusted quickly without much cost in

The incremental model is an intuitive approach to the waterfall model. Multiple development cycles take place here, making the life cycle a “multi-waterfall” cycle. Cycles are divided up into smaller, more easily managed iterations. Each iteration passes through the requirements, design, implementation and testing phases. A working version of software is produced during the first iteration, so you have working software early on during the software life cycle. Subsequent iterations build on the initial software produced during the first iteration.

It 's important to say that for more fickle projects, auxiliary frameworks exist for thoughts regarding project management, particularly the spiral model (Melonfire, 2006). The Spiral Life Cycle Model is a kind of iterative software development model which is normally put into practice in extreme risk projects ("Spiral," n.d.). In this system development method the aspects of both, waterfall model and prototype model are united. In the spiral development model the activities can be arranged in the form of a spiral ("Spiral," n.d.).

Select one (1) project from your working or educational environment that you would apply the DOE technique for the work process. Next, analyze the overall manner in which you would utilize DOE to manage and improve the work process of the project in question. Provide a rationale for your response.

Assuming no viscous forces present an inviscid model has been used for the calculations. Also from the equation of the Reynolds number Re=ρvl/μ due to Re being really big rearranging and assuming v and l to be constant the viscous force μ =ρvl/Re becomes negligible.

Spiral Modal is another method that combines the idea of iterative development and waterfall model. It evaluates every aspect of iteration and manages the risk through the analysis of continuous changing needs of the client (Grubb & Takang, 2003). It can be a useful method for Smith Consulting with the advantage of easy estimation of budget, schedule, etc. due to the spiral process, which includes various phases and cyclic implementation of the program. This makes it easy to adapt with any change that will help Kudler Fine Foods to understand purchasing behavior of customers. The repeated and continuous development under this model is also helpful to manage the risks. On the other hand, spiral model may not fulfill every aspect of both companies. It uses a protocol to develop a program, and if this protocol is not handled and applied properly, then it may corrupt all the system and data. It also makes Kudler Fine Food dependable on Smith Systems Consulting because the success of the program highly depends on the risk analysis phase (Grubb & Takang, 2003).

Cost and resource needs are higher for traditional than Agile due to Waterfall’s sequential development phase of all requirements determined in the beginning, software design and finally implementation of master design. The need for all information up front takes substantial time to gather and the sequential design does not allow for project changes as the flow enters into the programming stage. With Agile, costs remain low because there exists an incremental and iterative approach to the project, meaning less time is used to collect all requirements up front, the

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The model is based on three different premises: first individuals have a "semi statistical organ," an intuition maybe, which permits them to know the overarching public opinion, even without access to surveys. The general population have an apprehension of seclusion and realize what practices will improve their probability of being socially separated. Individuals are hesitant to express their minority sees, principally out of trepidation of being separated. The spiral model is a similarity used to outwardly depict the hypothesis. The end of the spiral refers to the measure of individuals that are not publicly communicating their opinions, because of the trepidation of seclusion. If an individual opinion does not follow the favored opinion,

In addition, defining requirements can be difficult and sometimes early assumptions are flawed. Some opponents of Waterfall argue that it is impossible to fully understand the system requirements until the development phase and that some performance issues cannot be predicted or are not evident until the testing phase. Waterfall is not well-suited for custom software projects that rely heavily on continuous customer feedback and changing needs because communication and collaboration is not always stressed; once the requirements are established, the customer may have little contact with the development team until delivery. (Chatterjee, 2010) Because Waterfall projects are not based upon small iterations that can be easily and promptly modified, occasionally critical errors are found in the late stages of a Waterfall software development project that require scrapping the project and starting over; a very costly and disappointing result. Another negative is that some programmers believe that Waterfall is out-of-date and that it does not accommodate for the unknown factors that are a constant challenge in designing leading edge technology. Developers who abide by

Focus is kept on the recurrence of condensed work cycles and also at the functional product yielded by the outcome, but in waterfall technique only once chance is been given to the development team to keep the project aspects right. But under the agile technique each and every feature of development including the design, requirements, is thoroughly checked under its lifecycle (Mahfuj et al, 2012). There is always some time to steer in another direction if a team stops at regular interval say after every two weeks and re-evaluates the project done.

After being able to be a part of a few data projects, I am a firm believer that waterfall will never go away, because it produces clean numbers and allows the data to easily be translated in visual form, therefore, I chose “The Waterfall That Won’t go Away” as my primary source of comparison for waterfall. Another reason I see the waterfall method still dominating the workspace is due to the number of different projects that reoccur. For example, I’ve experience several projects come to a close and be implemented throughout the company, but I will see a handful of old projects being returned to be modified so that it will meet the claims and coding requirements for several hospitals. Due to the continuous complexity in algorithms and software, billing codes are not always accepted in prospective delivery; resulting in retrospective recovery.

The waterfall model consists of five phases such as requirements, Design, implementation, verification and maintenance. The method is a sequential design process where progress is seen as flowing downwards in a steadily manner, each development phase has its own distinct goals. The model is similar to water flowing down a cliff it can only flow in one way and cannot go back up it is the same with waterfall development ,after a development phase is completed it proceeds to the next development phase you cannot go back.

Q1: Take a suitable example to develop a software and implement the waterfall Model technique in it to develop the software ?

First of all, here is some brief description about Agile development model and Waterfall development model. Agile development model is a type of Incremental model which means the software is developed in incremental and rapid cycles. This results in small incremental releases with each release building on previous functionality. Software quality is ensured to maintain well by testing each release thoroughly. It is usually used for time critical applications.