Essay On Software Development

•A description of the document object model, exploring issues faced when developing for a range of platform versions and device vendors

The Waterfall methodology was created by Winston Royce in 1970 and is based on the idea of "...progressing linearly from conception, through requirements, design, code and test..." (Neill, 2004). One of the main assumptions about this method is that the requirements will change very little if at all and that users will not be involved in development or be providing much feedback (Neill, 2004). A really good definition given by Laplante and Neil on this methodology is, "This model of development assumes that requirements are set, stable, and fully evolved before analysis begins, because development progresses linearly through the phases from requirements through system deployment. A phase is revisited only if artifacts created in that phase fail inspection review, or test. If you run into people who dispute this argument, remind them that water doesn 't flow up a waterfall" (10).

Written off as a dying approach to software engineering I found that the Waterfall approach process was in fact alive and largely in use according to a Queue opinion article (Neill, 2004). While surveying professionals for the article in Queue, the Waterfall approach was reported to be in use by a third of the professionals that responded to the survey (Neill, 2004). I could not help but wonder if the Waterfall approach was some sort of zombie process that was back from being presumed dead, or if the method was being used for convenience purposes. Before I would be able to answer these questions for myself I would have to look into why these presumptions were made in the first place.

According to CareerOneStop, about ten percent of software developers either have no college degrees, or only have high school diplomas. The creative aspect generated behind computer programs are made by software developers. Some develop the virtual systems that run society’s gadgets or control networks. Other software developers make applications that enable people to perform certain tasks on a device. If someone wanted to be a software developer, they have to have expertise in computers and electronics, engineering and technology, mathematics, telecommunications, and design. They would also have to perform tasks such as developing and modifying software to meet user’s needs, making sure that the software runs correctly

But there are some disadvantages of waterfall methodology. One major disadvantage is that developers cannot go back to the previous step once they have completed the step. If the project requirements are not satisfied initially then there might be a chance of project failure. It might also cost budget issues as well as more duration to complete the project. If developers want to make certain changes in the code of project in between then they again need to start from the beginning to write the code.

can stand alone as the sole development strategy. Verner and Cerpa (1997) observed a relationship between the size of a department and the preference to utilize a prototype. They also discovered many of the aspects of a waterfall approach that made it widely used still hold true. Developer communication and project control have long been seen as positive characteristics of the waterfall approach. The increased control is the result of the rigid, phased structure that defines a waterfall development plan. A drawback to this development strategy is the lack of feedback that we see in the scrum or agile method. This lack of feedback makes having a complete requirements essential, the lack of which can mean an unsuccessful or scrapped project.

In 2001 a group of thought leaders recognized the need for common set of values and principles that represent Agile Vision, as traditional development methodology was failing too often and they came up with Agile Manifesto that emphasizes four important Agile

Software engineering (SE) is the profession concerned with specifying, designing, developing and maintaining software applications by applying technologies and practices from computer science, project management, and other fields.

The top reason for adopting an Agile software application development approach is that it promotes a culture of collaboration and continuous feedback that concentrates on early delivery of superior products that meet important end user requirements. Agile software development is in use by many organizations and has been accepted not only as a method of developing software but in project management as well. This business case will outline the justification for Company “X” to move towards using the Agile development method and help guide management to evaluate and consider this option. An article related to the Agile method of software development was perused in preparation for this business case. The article examined is titled “Agility in Context” [1] (Hoda et al, 2010). This article along with my prior employment experience with Company “X” has helped provide the context for this business case.

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 quality and reliability of software today is expected to be extremely high. Software is being included in engines of automobiles, robots, x-ray machines at hospitals; it is no surprise that software is expected to operate correctly almost all the time. This reliability comes at a cost of increasing complexity. With the increase in complexity, software development teams are getting larger and maintenance is becoming more difficult. Although developers are dealing with these problems project dates are still very rigorous and projects can seem impossible to complete on time. Due to these problems, software development costs are rising which is increasing the cost of software for consumers. Without new practices to develop software

Introduction It is well known that lots of software corporations are still offering idealistic software costs, effort within rigid schedules, and complete their assignments well behind budget and schedule, or do not finish them at all(Walle and Hannay, 2009). This detail demonstrates that the need for steadfast methods to bring about software development effort and productivity are a strategic concern in software corporations. Concurrent Management of software development effort and productivity are important subjects in most software corporations (Walle and Hannay, 2009). One vital part when managing effort and productivity is the huge number of related and unidentified influencing factors termed as productivity factors. Recognising the most appropriate factors impelling project performance is vital for implementing corporate strategies by choosing and regulating suitable enhancement undertakings (Carver, Kendall, Squires and Post, 2007).

A new software tool, which aims to interactively discover the micro-organization of pyramidal neurons, has been developed recently. This tool is the PyramidalExplorer which makes possible the exploration of regional differences in the pyramidal cell morphology by integrating quantitative morphological information regarding the cell’s morphology with applied functional models. This tool is known for its navigation within the 3D dataset and for its unique filter and content-based retrieval operations. More than its possible contributions to the advancement of neuroanatomy, this tool is also expected to solve problems on brain diseases and to initiate improvements in the field of microanatomy.

INTRODUCTION: Software has been part of modern society for more than 50 years. The software process is the foundation for engineering software. Within the context of his book, Pressman defines “A software process as a framework for the tasks that are required to build high-quality software.” [1]. This paper introduces and discusses some of the Software methodologies and issues. METHODOLOGIES RELATED TO WEB DEVELOPMENT: In Software Engineering, a software development methodology is a division of software development work into different phases with the purpose of better planning and management. The methodologies may include pre-definition of

Software engineering has become a part of everyone’s life. People need software for various activities such as paying electricity, mobile bills through an automated systems and so on which make their work easier. Software engineering is a tedious task which involves steps such as planning, gathering requirements, designing and analysis (whether the architecture fits the requirements of the user or not), implementation (turning the design into machine executable code), testing and maintenance activities. Each step needs careful planning and execution because they involve a lot of money, time, and effort. In the same way to make their work easier, the Federal Bureau of Investigation wanted to build an automated system which provides a transition from their paper-based work to fulfill their tasks electronically. Therefore, they wanted to build a project called Sentinel. The Sentinel project had setbacks right from the start. When the request for proposal was published, only two companies came forward to take up the project which is really shocking for any organization. “The CIA’s new approach to break-down the entire project into smaller pieces and work on them incrementally did not seem difficult in the beginning, but as the time goes on they faced the real hardships[1]”. The various reasons for the failure of Sentinel Project are lack of proper scoping, no proper planning(repetitive increments in each phase and no proper estimates on time, money and prototyping which is