Within the ‘Software Development Life Cycle’ or SDLC, are two well-known models; The traditional model, commonly known ‘The Waterfall Model’, and the more modern models of which we will be observing the ‘Structured Evolutionary Prototyping’ model. Through this I will show you that while both of these models have their own set of benefits and short comings, they each have their own place within the SDLC and that each is superior in their own area and should be used as such.
The Waterfall model is more or less totally linear in progression with six specific stages being undertaken in chronologically descending order. The first stage is known as the Requirements stage, in which the document of product requirements is created for future reference. The Design procedure is the second stage, which culminates in the architecture for the base software. Next, the Construction stage occurs, where the implementation of coding upon the base architecture results in the actual software being created. The fourth stage is Integration, where the software is made ready for the systems that it will become a part of, merging it to create the first step of the final product. Testing and debugging then occur to make sure that Integration worked as planned without the introduction of new errors due to the integration or that old mistakes do not take on a new potency due to the change in the software. Finally, Installation of the product occurs, finishing the product, which is taken up by the Software and the Maintenance steps of the six-stage Waterfall model. There are non-traditional variations of the waterfall method, but these are not relevant to the current discussion, and as such, will not be covered at this time.
The Structured Evolutionary Prot...
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...s and necessary, and is rigid and unchanging in its execution. Contrarily, the Structured Evolutionary Prototyping Method is flexible and maintains a lot of contact with the client to ensure what it desired and necessary is given, it also suffers from potential project length extension and runs the risk of devolving into little more than “code and fix” development. While both models have their superior area in action, with Waterfall being the go-to choice if the end product is not necessary in quick order or cost effective, and where the Structured Evolutionary Prototyping Method is the choice when accuracy and cost needs to be considered, both models each have an important place in the Software Development Life Cycle and as such, it is important to consider both when deciding which model is the desired choice for modelling the website project in the coming future.
Stage 3 involves creating an Architectural Model version of the whole system including sub systems. A Viewpoint Hierarchy shows a skeleton version of the system which can be ins...
In chapter four the focus switches away from assistive technology supporting students in one content area and focuses on the teaching profession and how assistive technology can assist teachers to employ a universal design for learning. The Universal Design for Learning (UDL) promote learning that best for the student and promoting students a variety of methods to express their knowledge.
It is a step of defining the goals of the projects and the results are aimed at reaching certain levels of productivity of customer satisfaction. The second stage is measure, and it is the stage of collecting data and facts and evaluating current operational performance. The third stage is analyze with the purpose of developing methods and theories that will best suit the solving of the problem; it is also a stage of detecting cause-and-effect ties of the processes. The fourth stage is improve, it is aimed at generating ideas for reaching the desired process improvement. Finally, there is the control stage that is about monitoring the operations to find out whether the process of improvement is smooth and the problems were solved (Meredith & Shafer,
The emergence of modern cognition has been fundamental in separating early humans from our primate predecessors but archaeology and anthropology has provided diverse arguments the precise moment this came to be. There have been separate claims that the modern mind could have come to be when early humans created the first stone tools, the first personal ornamentation or the first artworks. In a deeper analysis it become clearer that the first complex thought came about not from any of those single events but rather a combination of the first two scenarios mentioned as the third scenario supports the claim. The human spark cannot be identified by the development of technology alone but rather by the gradual change that occurs between the innovations of stone tools and personal ornamentation known as the Lower and Middle Palaeolithic Period.
A software development methodology is a standard proven process which helps programmers, architects, system analysts and others to make a well controlled and an efficient progress in the high quality software development.
The clip comes from the hit TV Show, The Big Bang Theory. In this scene Sheldon and Penny are having a conversation. Sheldon is sad over the string theory and Penny is listening. Penny then tells him to move and then she compares it to her own personal experience. I will be focusing on the adaptation theory.
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).
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.
...otype can solve their own problems and opportunities just as easily as conventionally develop systems can. The systems analyst cannot completely substitute any prototype from a paper specification. According to Whitten & Bentley (2007), many information systems professionals try to prototype without paper specifications. Prototyping should be used to complement, not replace, other methodologies. The level of detail required of the paper design must be reduced, but it is not eliminated. Numerous design issues are not address by prototyping. Prototyping often leads to a premature commitment to a design. During prototyping, the scope and complexity of the system can quickly expand beyond original plans. This can easily get out of control. Finally, the very nature of any implementation can prevent analysts, designers, and end users from looking for better solutions.
Way of Working – UP is use case driven methodology developing system iteratively and incrementally thereby adding flexibility to process. This flexibility allows us to quickly react and afford frequent changes during development process. (Satzinger & Others, 2005) (Daoudi & Nurcan) Each iteration is a small part of project needed to be developed under four phases – Inception, Elaboration, Construction and Transition. UP defines six disciplines in each phase to better manage iteration. These are - Business modeling, requirements, design, implementation, testing and deployment. (Satzinger & Others, 2005) Every iteration carry out different activities form all discipline and deliver an increment at the end of iteration. Each increment developed during iteration consists of added functionality as compared to previous increment. So, iteration itself is capable of accommodating any design or requirement modification. (Satzinger & Others, 2005) (ISQA 8220 Notes)...
...ctors, and acceptance criteria for the working system. The prototyping is the last stage that must we follow before we implement the real system. From that, we can identify the strong and weaknesses of the system, so it will give the chance for us to improve the system before we implement the real system.
Within the analysis phase a set of goals are needed within the domain. From this there are three perspectives which are taken; the object model the Ronald LeRoi Burback (1998) states “dynamic model, and a functional model. The object model represents the artifacts of the system. The dynamic model represents the interaction between these artifacts represented as events, states, and transitions. The functional model represents the methods of the system from the perspective of data flow.” After the analysis phase the system design phase takes place. Here the system is sub-categorized and appointed tasks and persistent data storage is established, also within this phase the architecture is formed. Lastly the object design phase starts and is where the implementation plan is established and algorithms and object classes are also
The Software development field has grown with exponential rate. New products are coming to market daily. New innovations are flooding. Today the world of Software development is very large and much more complex than at any time. New software in large amount is hitting the market from beta version to fully functional products. This near-exponential growth in Software development market isn’t limited to any one segment of market. Rather it’s to Software Development as a whole – and it represents a huge challenge that must be addressed.
In this case study, the work breakdown structure is classified as a waterfall methodology where it is more rigid whereas eXtreme programming (XP) would be considered under the agile approach. The work breakdown structure (WBS) is a hierarchical structure that outlines tasks needed to deliver the product or service.
Agile software development is a group of software development methods based on iterative and incremental development, where requirements and solutions evolve through collaboration between self-organizing, cross-functional teams. It promotes adaptive planning, evolutionary development and delivery, a time-boxed iterative approach, and encourages rapid and flexible response to change.