What is the waterfall methodology? According to several software engineering sites, the waterfall methodology is also known as the linear-sequential life cycle model and also known as the traditional approach to software development. The waterfall model is as follows: Requirement of gathering and analysis, flowing down to, System design, then flowing down to Implementation, followed by Testing, and then Deployment of the system, and the final phase of Maintenance. The idea of the waterfall approach is that once a phase is completed, the process continues to move down the chain until all of the phases are completed and there is a product to deliver; the method is unidirectional. The waterfall approach is known for not allowing changes to be implemented passed the requirement gathering and analysis phase. …show more content…
If the errors are found and/or changes are requested by the customer, the entire process has to be tossed away and the process starts from the beginning. This leads to the discussion of disadvantages of the waterfall methodology. As mentioned one of the disadvantages is that changes after the first phase leads to are not allowed, highlighting that the first phase it critical to a smooth process to meet set deadlines. The customers are not hands on after the first phase, which is why the method emphasizes the importance of detail. Another disadvantage is that testing is done at the end of the project, so if there is an error in the coding it won’t be found until the end. A big disadvantage is that the customer may not be satisfied with the end
Agile project management is an iterative approach to the planning and monitoring of project processes. Agile projects are conducted in smaller tranches called iterations with each of these iterations closely reviewed and critiqued by the project team (employees, representatives of the clients etc.). The knowledge gained from this process is then used to ascertain the next steps of the
The project is going I am working is almost in the finish stage it is going into the production phase means getting to the live so that the users can able to use the application. After the developing the total code it will go to the testing phase where the testers will check the code is working properly without any errors actually the testers task is to check the code and submit to the developers if they found any errors or mistakes or else they will send the code to the production phase to deploy in the server to check the application.
I believe it all comes down to efficiency (reducing the amount of moving parts and keeping up with the latest technology to name a few). The article states how the government is always behind and having worked as a government contractor I completely agree. The government continues to use the “waterfall method” which is an outdated technique of completing a project. This process has since been replaced by a much more efficient method called “Agile”. The biggest difference between the two is communication. The waterfall method reveals and allows changes to be made to the project when it is fully completed. Agile shows the customer progress in weekly chunks allowing changes to be easily made. Making assumptions and taking the easy route by completing something blindly often waists time and money. Going back and changing something that doesn’t work
SDLC( Software Development Life Cycle) , is a process used by the software industry to design, develop and test high quality software .The SDLC aim to produce good quality software that meets or exceeds the user’s expectation and reaches completion within time and cost estimates.
Customer satisfaction is the important part in agile development and it is found by direct contact with the customers.
In the waterfall method, the steps have to be finished iterative, meaning the next step cannot be started until the previous step is completed. Once the current step is completed, then the next step can be started and so on. The customer does not get a working build during any of the steps and cannot make any changes in the scope at all. Once all steps are completed, the end result is given to the customer and then they can deploy and hope it does what they are needing it to do. If any of the steps need to be changed, then the whole process will need to be restarted from the beginning and the process began again. In agile methods, the process is more flexible. This method is flexible and can allow changes after each iteration. The goal of each iteration is to provide a working build so that the customer can give feedback on it and changes can be made, if needed, so that all requirements are met, or if requirements have changed since the initial build of the
It is possible to have a singular methodology for project management to specify morality and ethics when dealing with customers. Application of agile project management approaches like Atern offer a more inclusive approach for stakeholders including consistent update and revision of strategies. When the project manager violates protocol, all stakeholders should come together, clarify issues of violation, and set standards for all to follow.
The Systems Development Life Cycle (SDLC) consists of phases used in developing a piece of software. It is the plan of how to develop and maintain software, and when necessary, replace that software. In 2007 during my hospital’s transition to a new software system, I was fortunate enough to be included in the process. I did not get involved until the implementation phase, but from then on, until now, I remain very active in the process. I decided to highlight the Waterfall Model of SDLC. The Waterfall Model is a “sequential development process” with each phase continuing in a line (McGonigle and Mastrian, 2012, p. 205).
If the error is detected during a later stage of software development, The developers will require to do a lot of reverse engineering processes which will be very frustrating and time consuming, the developers will have to review preceding steps and rework their deliverables and also might have to start from scratch. The later the software error is detected the more the number of people will be affected by it. This will in turn result to an increase in the cost required to communicate with the affected people and then fix the error. Thus, the cost for communicating the details of the defect, distributing and applying the software fixes and probably retain and convince the end users to use this particular software that has been sold to hundreds and thousands of customers will be too high. Once the goodwill and the brand value of the software is affected it is difficult to regain the customers trust. Ensuring early fixing of errors will save the developers
In order to ensure quality, a continual quality process will be used throughout the project life cycle. This iterative process includes measuring process metrics, analyzing process data, and continuously improving the process.
Make sure that their methodology is accepted by clients. Methodologies can be flexible enough to be adaptable according to customer’s demands. If the customer is not satisfied with the methodology, there is a great chance for failure in the project, and to lose the customer for further
Most of the software development projects change just during the development is in process. This is the reason that agile methodology is best for these projects. There is a room for change in them. Software developers follow these methods and this is the reason that they have further modified these methods according to the different types of projects they confront in their development time.
Given the time, it takes to develop large sophisticated software systems it not possible to define the problem and build the solution in a single step. Requirements will often change throughout a projects development, due to architectural constraints, customer’s needs or a greater understanding of the original problem. Iteration allows greater understanding of a project through successive refinements and addresses a projects highest risk items at every stage of its lifecycle. Ideally each iteration ends up with an executable release – this helps reduce a projects risk profile, allows greater customer feedback and help developers stay focused.
Product designing, in this stage for continuous quality improvement the parameters of the design gets changed and the level of tolerance gets altered. This is very difficult for the manufacturing companies in implementation stage.
Study of Literature for related work is the most important step in software development process. Before designing and developing the tool it is necessary to determine the time factor, the economy and company strength. Considering the importance of software reliability in software engineering, its prediction becomes a very fundamental issue. Machine learning and soft computing techniques have been leading the statistical techniques in last two decades as far as their applications to software engineering are concerned. The most recent research work carried out for predicting software reliability was Hybrid intelligent systems for predicting software reliability [1] Mohanty et al. (2013). The author has employed recurring architecture for Genetic Programming and Group Method of Data Handling (GMDH) and also collaborative models involving GP, GMDH as constituents and GP, GMDH, BPNN and Average as arbitrators in predicting software reliability. Another state-of-the-art review [2] Mohanty et al. (2010) validates the affirmation. The techniques that were employed by the authors were machin...