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There are many methodologies which are used by the professional software development companies nowadays. This page provides an annotated, topicbased collection of available resources for statistics, statistical graphics, and computation related to research, data. There are certain advantages and disadvantages associated with each of them. The basic purpose of these methodologies is to provide smooth software development according to the project requirements. Software development methodology is a framework that is used to structure, plan, and control the process of developing an information system. This kind of development methodologies are only concerned with the software development process, so it does not involve any technical aspect of, but only concern with proper planning for the software development. Below are the 1. 2 mainly used software development methodologies with their advantages and disadvantages The waterfall model is one of the most traditional and commonly used software development methodologies for software development. This life cycle model is often considered as the classic style of the software development. This model clarifies the software development process in a linear sequential flow that means that any phase in the development process begins only if the earlier phase is completed. This development approach does not define the process to go back to the previous phase to handle changes in requirements. Advantages of Waterfall Model. Waterfall model is very simple and easy to understand and use a method that is why it is really beneficial for the beginner or novice developer. It is easy to manage, because of the rigidity of the model. Moreover, each phase has specific deliverables and individual review process. In this model phases are processed and completed are at once in a time thus it saves a significant amount of time. This type of development model works more effectively in the smaller projects where requirements are very well understood. The testing is easier as it can be done by reference to the scenarios defined in the earlier functional specification. Disadvantages of Waterfall Model. This model can only be used when very precise up front requirements are available. This model is not applicable for maintenance type of projects. The main drawback of this method is that once an application is in the testing stage, it is not possible to go back and edit something. There is no possibility to produce any working software until it reaches the last stage of the cycle. In this model, there is no option to know the end result of the entire project. This model is good for a small project but not ideally suitable for long and ongoing projects. Not ideal for the projects where requirements are very moderates, and there is great scope for modification. The prototype methodology is the software development process which allows developers to create only the prototype of the solution to demonstrate its functionality to the clients and make necessary modifications before developing the actual application. The best feature of this software development methodologies is that it solves many issues which often occur in a traditional waterfall model. Advantages of Prototype Model. When a prototype is shown to the clients, they get a clear understanding and complete feel of the functionality of the software. This method significantly reduces the risk of failure, as potential risks can be identified in early stage and moderation steps can be taken quickly. The communication between software development team and the client makes very good and conducive environment during a project. It helps in requirement gathering and requirement analysis when there is lack of requirement documents. Disadvantages of Prototype Model. Prototyping is usually done at the cost of the developer so, it is should be done using minimal resources otherwise organizations development cost stretch too much. Too much involvement of client is not always favored by the software developer. Too many modifications may not good for the project, as it easily disturbs the workflow of the entire software development team. Agile Software Development is an approach that is used to design a disciplined software management process which also allows some frequent alteration in the development project. This is a type of software development methodologies which is one conceptual framework for undertaking various software engineering projects. It is used to minimize risk by developing software in short time boxes which are called iterations that generally last for one week to one month. Advantages of Agile Development Methodology. Agile methodology has an adaptive approach which is able to respond to the changing requirements of the clients. Direct communication and constant feedback from customer representative leave no space for any guesswork in the system. Disadvantages of Agile Development Methodology. This methodology focuses on working software rather than documentation, hence it may result in a lack of documentation. The software development project can get off track if the customer is not very clear about the final outcome of his project. Rapid Application Development RAD is an effective methodology to provide much quicker development and higher quality results than those achieved with the other software development methodologies. It is designed in such a way that, it easily take the maximum advantages of the software development. The main objective of this methodology is to accelerate the entire software development process. 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Advantages of the RAD model. Rapid Application development model helps to reduce the risk and required efforts on the part of the software developer. Gold Logistic SoftwaresSoftware development methodologies play a vital part of developing the software. There are many methodologies which are used by the professional software development. Excellence in Computer Consulting Software Development. Logistic Solutions Inc, founded in 1990, is an established IT solutions and services provider, offering. Shop for the latest software for Mac or PC at Officeworks, including Norton, Adobe, Microsoft, MYOB and much more. This model also helps clients to take quick reviews for the project. This methodology encourages customer feedback which always provides improvement scope for any software development project. Disadvantages RAD model. This model depends on the strong team and individual performances for clearly identifying the exact requirement of the business. It only works on systems that can be modularized can be built using this methodology. This approach demands highly skilled developers and designers team which may not be possible for every organization. This method is not applicable for the developer to use in small budget projects as a cost of modeling and automated code generation is very high. Dynamic Systems Development Model is a software development methodology originally based on the Rapid Application Development methodology. This is an iterative and incremental approach that emphasizes continuous user involvement. Its main aim is to deliver software systems on time and on the budget. This model simply works on the philosophy that nothing is developed perfectly in the first attempt and considers as an ever changing process. Advantages of Dynamic Systems Development Model. Users are highly involved in the development of the system so, they are more likely to get a grip on the software development project. In this model, basic functionality is delivered quickly, with more functionality being delivered at frequent intervals. This method provides an easy access by developers to end users. In this kind of development, approach projects are delivered on time and within a specific budget. Disadvantages of Dynamic Systems Development Model.