...understand Rapid Application Development (RAD) by outlining A brief history of development approaches leading to it Rationale Advantages/Disadvantages GUI Builders/Designers Event Driven Programming Application Programming II Rapid Application Development and Prototyping Rapid Application Development and Prototyping What is RAD? 3 RAD Approaches 4 Rapid Application Development (RAD) is a development lifecycle designed to give much faster development and higher-quality results than those achieved with the traditional lifecycle. It is designed to take the maximum advantage of powerful development software that has evolved recently (Martin, 1991). By using a series of proven application development techniques, within a well-defined methodology, organisations can quickly and cheaply develop systems without compromising on quality . Rapid Application Development and Prototyping Barry Boem’s spiral model James Martin's RAD methodology Agile methods Rapid Application Development and Prototyping 1 2/29/2016 What is RAD? 5 What is RAD? 6 Dr. James Martin came up with the RAD software development methodology/approach in the late 1980’s. This was in response to the non-agile Stagewise or Waterfall Models methodologies of the 1970s. Unlike the traditional conventional approaches, RAD emphasises development rather than specification and planning. It is thus a flexible and rapid development process...
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...of an organization is an essential skill for a systems analyst. A systems analyst uses the concept of analysis and design to maintain and improve their information systems. The main goal of systems analysis and design is to improve organizational systems, typically through applying software that can help employees accomplish key business tasks more easily and efficiently (citation). The first steps that need to be taken in systems improvement are research and analyzing the scope and feasibility of a new project. Systems Analysis Approach The information-gathering technique and design method proposed for this project is the Rapid Application Development method, acronym RAD. The RAD methodology is a process in which research of user requirements is compiled before producing any detailed system design documents. Using this approach decreases the time needed to design and implement new systems. Factors of Successful Analysis The Rapid Application Development method incorporates using three different approaches of systems analysis. These sub-approaches are Prototyping, Computer-Assisted Software Engineering Tools, and Joint Application Design. By using the three different perspectives, RAD streamlines the entire systems analysis and design process. Prototyping Prototyping is the building of a raw and small-scaled working model. This model is an easily modified and extensible representation, simulation or demonstration of a planned software system, likely...
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...1. Introduction Over the last three years the focus of the information technology industry has moved towards development for the World Wide Web (WWW). Information systems using WWW technology, delivered by an Intranet or via the Internet, are now prevalent throughout New Zealand and overseas. Within New Zealand, a wide variety of organisations are deploying information systems onto the WWW, including banks, government departments and other service providers. They are using the WWW as a strategic business tool, supporting their existing operations or providing a low-cost solution for delivering a new product or service line. 1.1 Proposition and Aims There is an abundance of information on the graphical and user interface aspects of WWW site design. In addition, a large body of knowledge has been developed in the area of software development methodologies. However, there has been very little research conducted to examine if these existing research methodologies are applicable to the information systems developed for the WWW. The WWW is a technologically dynamic environment, and presents new challenges for developers. In order to address the emerging WWW environment, a number of researchers have proposed software development methodologies specifically for the WWW. Consequently, the aim of this research was to investigate how organisations are currently developing WWW-based information systems, and the reasons why those methods are being used. This examination is important...
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...A number of system development life cycle models have been created for support an improvement of an organisation these are; fountain, waterfall, spiral, agile RAD- Rapid Application Development. One of the oldest is the waterfall: a sequence of stages in which the output of each stage becomes the input for the next. RAD- rapid application development Fountain Spiral Agile These stages can be characterized and divided up into different ways such as; Feasibility study enabling a high level view of intended project and determine its goal System analysis: Analysing end users information needs and defining project goals in terms of functionality and operation of intended project System design: Describes desired features and operation in detail, including screen layout business rules, process diagram and other documentation. Implementation Integration and testing: Brings all the pieces together into special testing environment, then checks for errors and bugs. Acceptance: The final stage of initial development, where the software is put into production and runs actual business. Maintenance: What happens during the rest of software’s life: changes, correction, additions, moves to different computing platform and more. The importance of following a procedural/staged life cycle in a system investigation is The role played in information systems development by the system analyst The importance of linking information system to business needs are; In general...
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...Club IT Part 2 University of Phoenix XBIS/219 1/13/2012 Club IT Part 2 * After meeting with Lisa and Ruben, I came up with several ideas for Club IT to become more successful throughout. I researched several project development methodology that could bring Club IT to a whole new level as far as business and information technology. I was also able to give Lisa some suggestions on how to keep Club IT's edge as high energy and high impact as possible through club and public resources such as network applications (University of Phoenix, 2012). I have also identified three business problems at Club IT and plan on fixing those problems as soon as possible with my suggestions. The project method methodology that I have decided to go with for the company is rapid application development. I chose this methodology because it can combine a number of tools and user requirements such as prototyping and joint application design to rapidly produce a high quality system (Rainer & Turban, 2009). This methodology is important because it allows the users in the company to be involved from the start as well as speed up systems development. Three business problems at Club IT are the website, computer hardware, and Internet. These three problems are huge for Club IT because these problems are slowing Club IT's business down. By upgrading and fixing these problems, Club IT could be better than ever. Club IT's website has been a problem because the website lacks the same excitement...
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...implement the waterfall Model technique in it to develop the software ? Ans: The waterfall model shows a process, where developers are to follow these phases in order: 1. Requirements specification (Requirements analysis) 2. Software Design 3. Integration 4. Testing (or Validation) 5. Deployment (or Installation) 6. Maintenance In a strict Waterfall model, after each phase is finished, it proceeds to the next one. Reviews may occur before moving to the next phase which allows for the possibility of changes (which may involve a formal change control process). Reviews may also be employed to ensure that the phase is indeed complete; the phase completion criteria are often referred to as a "gate" that the project must pass through to move to the next phase. Waterfall discourages revisiting and revising any prior phase once it's complete. This "inflexibility" in a pure Waterfall model has been a source of criticism by supporters of other more "flexible" models. The waterfall model proceeds from one phase to the next in a sequential manner. For example, one first completes requirements specification, which after sign-off are considered "set in stone." When requirements are completed, one proceeds to design. The software in question is designed and a blueprint is drawn for implementers (coders) to follow—this design should be a plan for implementing the requirements given. When the design is complete, an implementation of that...
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...SLDC vs. JAD vs. RAD Methodologies of Software Development Kaplan University IT460 – System Analysis and Design From my reading I learned that Software Development Life Cycle (SDLC) follows a pretty general process that is used by a lot of project managers. The whole purpose of SDLC is to create a better product than is planned for while meeting time and cost figures (Tutorials Point). the Chief Information Officer (CIO) asked to look at a couple of methodologies. The two methodologies are JAD (Joint Application Development) and RAD (Rapid Application Development). JAD (Joint Application Development) is a methodology where you use the client and end users at different points during the project (Rouse, 2007). By using this methodology some of the advantages are that in a short time frame you can gather and consolidate a big amount of information. Another benefit is that you can look at many points of view on the project and can resolve discrepancies in a timely manner (n.d.). Some disadvantages of JAD (Joint Application Development) it takes a lot of planning and scheduling and this will also require a lot of time from the stakeholders. Another disadvantage is that people that are working on the project have to be trained and experienced with what the project requires. RAD (Rapid Application Development) is a methodology that is focused on producing software quickly. This is done by using prototypes that have been established before and uses tools that are...
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...References Rapid Application Development Beynon-Davies, P., Carne, C., Mackay, H., & Tudhope, D. (1999). Rapid Application Development (RAD): An Empirical Review.European Journal of Information Systems, 8(3), 211-223. Retrieved from Waterfall Method Liu, L., & Horowitz, E. (1989). A Formal Model for Software Project Management. IEEE Transactions on Software Engineering,15(10), 1280-1293. An Old Waterfall The waterfall model is one of the oldest software development processes often cited in project management. It has been over 40 years since it was first formally described by Winston W. Royce. The model was viewed in the same regard as real life waterfalls because of how the model was presented. The development process of the waterfall model is a linear sequential process just like a waterfall flowing from top to bottom. It is very interesting to me, that often at times the waterfall model can also show backward pointing arrows contrary to a true waterfall where once water flows down, it cannot flow back up. This tells me that the original waterfall model was not perfect nor is any other type of project management process. In Royce’s original model he lists six phases in its model: requirements, preliminary designs, interface designs, final designs, testing and integration; before advancing to any following phase it must be verified. This verification can be considered milestones and is used as a tracking mechanism of the progress of the project. The waterfall...
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...Why is the systems development life cycle important? Student’s Name Professor Institution Course Date Systems Development Life Cycle (SDLC) is a process that involves planning, creation, testing and deployment of an information system in information systems and systems engineering. The processes involved in the cycle are planning, analysis design implementation and maintenance in a cycle form. Systems development has clearly defined phases of work that systems engineers use in planning, designing, building, testing as well as delivery of information systems. SDLC employs various models for its implementation (Blanchard, 2006). Iterative Development Model or Incremental Development Model has smaller self-contained phases of life cycle in the project. There is an addition of functionality to the software product in each increment division. This creates the need for testing the added functionality before the software goes to the next stage of development. This model is critical in that it enables early detection of errors that could have been developed during the software development. Incremental Development Model examples include Rapid Application Development (RAD) and agile development. The waterfall model is a process in which developers follow certain phases in an orderly manner while developing software. These phases form an important part of SLDC in that each phase has to be finished in order to move to the next stage (Blanchard, 2006). This means that it is reviewed to...
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...each other. Cohesion is the extent to which a system or a subsystem performs a single function. 4. In what way are organizations systems? Organizations are systems because they are made up of interrelated components working together for a purpose. They take input from and return output to their environments. Organizations can be redesigned through a systems analysis and design process by which system components are replaced while preserving interconnections between components. 5. List and explain the different phases in the systems development life cycle. A systems development life cycle is a set of phases that mark the development of an information system. The systems development life cycle in the textbook consists of four phases: (1) systems planning and selection; During planning and selection, an organization’s total information systems needs are analyzed and prioritized, a potential information systems project is...
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...am required to recommend either Joint Application Development (JAD) or Rapid Application Development (RAD). Therefore, I will provide information and allow the company president to make a decision based upon my research. JAD is a methodology that uses the design and development processes of an application. It is an information gathering technique used to design and develop computer-based systems. RAD is a shorter version of JAD; it reduces the time taken to develop an application (UMSL, 2014). The disadvantages of JAD are actually strengthening to a project; they just require a lot of accuracy. JAD require significant planning and scheduling to ensure the project is on task in correlation to the project plan. Furthermore, it involves much time and effort of stakeholders. For a successful project, JAD demands experienced and trained personnel (Directutor, 2010). On the contrary, the advantages of JAD are very relaxed and unrushed. It allows time for the gathering and reviewing large amounts of information. In result, high quality work may be produced. Discrepancies can be properly handled. Finally, team communication is increased. Overall, time is the number one advantage associated with JAD (Directutor, 2010). The disadvantages of RAD software development are that it should not be used for complex projects. Since it is a rapid development, teams must be motivated and determined to work towards the vision of the project. Furthermore, produced quality may have to be sacrificed...
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...Enterprise Systems Development: Impact of Various Software Development Methodologies By NAVEEN KARKONDA Id#110-00-4907 Abstract: Software Development Methodologies have always been the main focus in the software development life cycle of any project. Each evolutionary shift introduced new ways of thinking and viewing problems as well as introducing strengths and weaknesses in software development. However, identifying one stop solution in terms of a software development methodology for enterprise wide application development whose various sub-components or sub-stages can be best used to describe a software development scenario is still an evolving domain. This, coupled with the reality that computer science and its allied areas like information systems and information technology domains are moving forward rapidly with regards to available technologies, making it extremely difficult task for practitioners to maintain pace with the available information technologies and their application in various domains. It is to address these scenarios and probabilities that this research paper examines various software development methodologies or process models and their impact on the overall software development life cycle. 1. Introduction: Software Development Methodologies have always been the main focus during the software development life cycle of any project. Over the past 40 years, there have been significant paradigm shifts in software development, such as structured...
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...Fundamentals of Business Systems Development BSA/375 3/14/2012 The success of an organization is mostly dependent on the workforce employed and there is a need for an effective HR system. The use of information technology in HR provides automation of the services. Management can easily obtain data on their employees. The development of HR system requires the collaboration of all the stakeholders to ensure that it will be to the best interest to the management and the employees. This paper expounds on the process of identifying requirements, design methodology, scope and feasibility for the development of HR system. Human resource management comprises the activities that govern the organization’s workforce to ensure maximum productivity and success. The HR system should be structured into three components: strategic planning, operational management, and administrative management. In developing a system for human resources, the components and their respective functions are considered. The overall functions that are to be included in a human resources information system are: recruitment of new staff, training of new and existing staff, performance management, labor relations, employee relations, job analysis, job design, payment structure, benefits allocation, employee development, and incentives (NMA, 2008). The role of HR administrative and operational structures is to improve efficiency in handling information for the employees and their activities. Information system can...
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...a model of the entire system and, if it meets user requirements, can be fleshed out into a full information system. Rapid Application Development (RAD) uses iterative system prototyping to create the final application. A prototype designed using design, or throwaway, prototyping is meant to be discarded after user review, whether or not its design details will be incorporated into the final version. This is frequently used to do mock-ups of user input screens, for example, before the back-end code is developed. C. CASE tools speed development by automatically creating diagrams and sometimes even code from analyst input. Combining CASE tools with 4GLs and application, report, and screen generators gives systems analysts the ability to create information systems quickly and accurately with effective documentation. D. Advantages: • Users get to see, and possibly interact with, a system rather than imagining what it will be like. • Design problems are identified and corrected earlier in the process. • TCO can be lowered by early design refinements, or even scrapping a project when it becomes apparent that it won’t succeed. Disadvantages: • The prototype is not a fully-functioning system, so there may be key details that are not identified until the system is complete. • If the prototype is too elaborate, the work put into it can actually delay the project as a whole. • Prototypes are generally used to test short-term needs. Long-term functionality issues may be overlooked...
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...that the implementation is complete and basically correct. Analysis culminates in identifying classes implied by the use cases, and documenting them using an Analysis Class Diagram.” (Russell C. Bjork Professor of Computer Science, 2004) The difference is in object oriented analysis the data is combined in a process that acts on the data in the object whereas structured analysis treats the process and the data as separate components. 2- Describe the phases of the system development life cycle, and compare the SDLC waterfall model with the spiral model? “The Systems Development Life Cycle (SDLC) is a conceptual model used in project management that describes the stages involved in an information system development project from an initial feasibility study through maintenance of the completed application. Various SDLC methodologies have been developed to guide the processes involved including the waterfall model (the original SDLC method), rapid application development (RAD), joint application development (JAD), the fountain model and the...
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