Learning Systems Development And Software Construction And Modeling

SC will compare traditional and various iterative implementations of the SDLC. For example, Braude and Bernstein (2011) state that the popular and mature waterfall process model promotes simple comprehension, project management, and resource distribution of small project development lifecycles. The serial nature of the traditional SDLC leans toward the gathering of all requirements at the beginning of the project whereas the majority of testing occurs at the end of the lifecycle. The waterfall model’s linear design creates disastrous risks for large projects if the project team does not understand the core requirements during the initial phase of the project or the detection of major problems occurs toward the end of the project. On the other hand, a spiral model significantly reduces risks for large projects whereas complexity causes overkill for smaller projects. The project’s physical scope, timeline, budget, and resource determine which the most optimal process model for a project. Table 1.1 displays a comparison chart that SC uses to weigh advantages and disadvantages of traditional SDLC and Agile development methodologies. SC will utilize this chart to determine which development methodology is utilized based on the primary amount of questions answered positively weighed with the clients business case requirements. “Agile software development is a

A prerequisite to this approval is a Project Charter to be completed and signed off by the Operating or Corporate Group Leader. The SDLC begins with a cross-functional kick off meeting where the scope of the project is defined, the majority of requirements are identified, and priorities are set regarding need and timing. The requirements are documented as user stories and may be optionally captured within the user story tracking software (JIRA). This tool can also be leveraged to collect any additional clarification of functional design requirements.

Agile is an iterative and incremental (evolutionary) approach to software development which is performed in a highly collaborative manner by self-organizing teams within an effective governance framework, with "just enough" ceremony, that produces high quality solutions, in a cost effective and timely manner which meets the changing needs of its stakeholders [1].

When it comes to systems development today, the most important decision every development team faces is which approach to use. Given the fact that information technology is continually growing, it is extremely important to shorten the time spent on the development as much as possible. This, however, is sometimes easier said than done. Because there are situations where the complexity of the system requires a huge amount of time to develop, it is much wiser to slow down and do things the right way rather than hurry and be forced to repeat the process again. Therefore, it is vital to choose the best approach. Although there are several different methodologies that can be used when it comes to systems development,

This essay involves the comparison and contrast of the different methodologies used by programming teams. Among these methodologies are; System development life cycle (SDLC), Extreme programming and Agile methodology. Software development methodologies are the frameworks involved to structure, plan and control the processes used in developing an information system. The system development life cycle (SDLC) is a conceptual model which is involved in most project management and used for large scale projects with relatively large number of developers. A good example of SDCL methodologies includes; waterfall model. The SDCL takes a lot of time to produce complete products but of high quality. Agile methodology is a conceptual framework used also in project management and it is designed for small projects with few developers. Extreme programming on the other hand allow for communication with customers and by doing so it ensures interaction between developers and consumers in order to change as fast as the customers' needs and desires changes. Even though there different methodologies, agile methodologies seem to have a lot of advantages over the Extreme programming and system development life cycle. Since it combines a number of other methodologies to come up with a better way for developer to produce faster and change to as customers desires changes.

Software development is a complex process where focus is on fast delivery of software products in cost effective manner (Mohammad, Alwada’n, & Ababneh, 2013).

There are many development methodologies for creating information systems. One of the more popular methods, developed in 1970 by Winston Royce, was the waterfall methodology. The waterfall methodology required that a team follow a prescribed sequence of five major steps when developing an information system. The project phases are linear and performed in a very methodical order starting with requirements analysis, then moving to design, followed by implementation, verification, and finally maintenance (see Exhibit A.). This methodology has been in place for many years but the highly structured methodology posed some major challenges. One major problem is when the business users dramatically change the requirements in later phases. This results in major rework and in some cases even project failures. With the advent of the Internet and Web-based technologies, the systems development community needed a more flexible methodology as projects were under greater pressure to deliver systems faster. Then in 2001, a small team of technologists created an iterative agile development methodology which forced systems development efforts to be broken up into smaller manageable timeframes called “sprints”. These iterative sprints contain a set of manageable system components allowing the teams greater flexibility when producing software (see Exhibit B). According to the Agile for Dummies text, “Agile is an attempt to make the process of software development lean and effective, and it’s

Another component to an Information systems is software. Software is a set of key instructions that enables the end user to interact with the computer and permits the end user to perform a certain task; also allows the computer to serve some purpose (Cartwright, 2005). There are two types of software, one software is systems software and another one is application software. Application software of key instructions that are more focused towards the end-user. Systems software is a software developed in such way that is designed to control and support hardware of the computer. Systems software also provides a platform to run the computers application. The application software is more focused towards a niche market and maybe focused towards organisation who may deal with such issues such as databases (Turban and Rainer, 2009). In total there are two development to Software and they are; traditional based software and web-based software. Traditional software can be Systems Development Life Cycle (SDLC). Systems Development Live Cycle is a structure of a detailed plan describing how to develop, maintain and replace the software. This is methodology consists of improving software and the development process. SDLC consist of different stages and they are: Feasibility, Analysis, Design,

System engineering principles and techniques such as model building, simulation, estimation, and measurement are used to build software products through the Software Development Life Cycle (SDLC). The software development life cycle is a stepwise and systematic process where each step depends on the successful completion of the previous step all arranged in a sequential order.

The structure and order of activities exercised for the advance of systems, are known as the “System Development Life Cycle”. The activities and processes within this outline are typically executed according to a sound defined and complete sets of process known as methodologies. These methodologies comprise specific actions for the requirement analysis as well as the design of mutually the data and development sections of the arrangement.

SDLC evolved from the need of systems to do systems (Roebuck, 2012). This is mainly because systems development is a rigorous to undertake, and requires a definite scope and disciplined process. According to Massey and Satao, SDLC involves an intricate process that has eventually led an increase in its specialization (2012). For instance,

As we saw throughout the last forty or so years is that computer systems frequently evolve and that developmental change is inevitable and software development is no stranger to this, which is where agile development or the term that some use agile software development comes into play. This is a concept that searches for alternatives to the traditional way of managing a project and based on the foundation that change is essential to software development. Throughout this paper, we will look at the reasons that brought about the change in thinking with regard to software development, discuss some of the key principles of agile development, methods under agile development and the benefits of the use of agile development. Let’s begin this document with a discussion into what brought about the change in thinking.

One system development methodology is not necessarily suitable for use by all projects. Each of the available methodologies is best suited for specific kinds of projects, based on various technical, organizational, project and team considerations.

 I will follow the Iterative model for developing this Project and whole Project will be developed using the SDLC scenario.

In this paper I will be discussing the above two methodologies used in developing two different software projects. The articles that my discussion is based upon are cited at the end of the paper –