Implementing Developing An Information System

In this self-starting world, system analysis and design are generally connected with the actions of software development. Systems analysis and systems design are normally theorized as the two main components of a system development. System analysis is the course of exploring a system, detecting problems, supporting the details of a present or planed system, which uses the information to encourage advancements to the system. in the organization which I am employed, there are numerous

The Waterfall method is essentially a sequential approach for software development. At each stage of a project, the all tasks and goals need to be completed before moving to the next stage with the goal of reducing error. The first signs of the Waterfall method

Design involves translating the identified requirements into a logical structure and consists of "defining the hardware and software architecture, components, modules, interfaces, and data to satisfy specified requirements It involves defining the hardware and software architecture, specifying performance and security parameters, designing data storage containers and constraints, choosing the IDE and programming language, and indicating strategies to deal with issues such as exception handling, resource management and interface connectivity. System design helps in specifying hardware and system requirements. The system design specification is a starting point for the next phase of the model.

The third phase of the system development process is the programming phase. During this stage system specifications that were prepared during the design stage are translated into software program code (Laudon, & Laudon, 2016). The business user plays a vital role in this stage because it is in this stage that the software will be either developed or purchased from an outside vendor (Hsu, Lin, Zheng Hung, 2011). Ensuring that the software aligns with the new requirements is vital to the long term success of the information system.

The waterfall model of software engineering for the systems development life cycle model is the most popular version. Often considered classic approach to life cycle of systems development , linear and sequential waterfall model describes the development system. Waterfall development objectives are different for each stage of a development .Imagine a waterfall on the cliff of an alp. Water has flowed over the edge of a steep mountain side and has started walking down , it cannot turn back. It is same as the waterfall development. Once a phase of development is completed, there is no turning back when the development proceeds to the next phase.

The original Waterfall model has a foundation that is supported by two distinct characteristics. First, the methodology is rooted in the fact that that the software be developed in stages. “Originally created by Benington in 1956 and later modified by Royce in 1970, the quintessential Waterfall model is linear and sequential in evolution, typically with milestones at each phase of development. (Pavolka, 2005). As seen in figure 1 (Ruparelia, May 2010), the typical thresholds consisted of Evaluation, Requirements, Analysis, Design, Development, Validation, and ultimately Deployment. The evaluation phase, at the aggregate level, helps to reveal the situation at hand. The requirements phase is arguably the most important phase of the Waterfall plan as it lays out the project statement and sets the framework and expectations for the project. The next phase, Analysis, works as a comparison between what capabilities are needed versus what constraints currently exist. That leads into the Design phase in which the software developers determine the architecture required to meet the customer’s expectations taking into account the constraints previously identified. Development is the next phase that takes the inputs from the Design phase and outputs a tangible product ready for testing. The testing or Validation phase is the process in which the software is checked for two things: a) any and all bugs are identified and removed and b) the original scope of work including all

The Waterfall method was originally developed in 1970 by Dr. W Royce to assist with the development of software. It has survived to this day through adaption and revisions enabling it to be one of the most widely used models (Charvat 2003). Its namesake originates from the analogy of a waterfall flowing downwards with the model following suit, cascading towards completion (Balaji and Murugaiyan 2012) this is known as a serial lifecycle. Each phase (starting in the top left corner) within the serial lifecycle is completed before moving on to the next phase until the end goal is reached (see Figure 1). This kind of method suits projects that have clearly defined stage goals, outcomes or solutions that are highlighted in the initial strategy of

For this project I have chosen to take a different approach to how it will be done. As studying both traditional SDLC (Waterfall) and agile approaches towards development of systems I believe that both of these methodologies have qualities of good and bad. I plan to take the best of both from each methodology, the initial phases of the Waterfall methodology provide a solid structure from which the actual build and development of the project can be started upon. From where the build and development of the actual system the process would go through an agile approach. This means that the system can be built in an iteratively where for each iteration there can be adjustments that are simply made to the system. This benefits the overall production as the development can react to changing requirements.

An Information System (IS) is commonly known as a system composed of people and computers whose main purpose is to processes or interprets information. In this context, information system development methodologies (ISDMs) are used to organize the IS development process (Zaied et al.2003). In the last decades, various well-known ISDMs have been established in literatures. For instance, Agile Methodology, Structured Systems Analysis and Design Methodology(SSADM), Soft Systems Methodology(SSM), User-centered Development Methodology, ETHICS Methodology, Jackson Systems Development(JSD) and etc. With these high level concepts of methodology for information system in mind, the rest of this research is focused on selecting a suitable development approach for the project, and identify the features and current thinking on the selected methodology.

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,

Waterfall Model is the first software development process model proposed by Royce in 1970 which is a linear sequential software development life cycle (SDLC) model. It is a sequential process model which does not overlap. It means that until the one phase is not completed then next phase cannot start.

There are quite a few systems development approaches. In this report, systems development life cycle (SDLC) and rapid application development (RAD) have been discussed.

In the design phase, system and software design is prepared from the requirements gathered in the requirements and analysis phase.

The waterfall model is crucial because it can easily help the users and developers to understand the sequential procedure in development. Since it shows the processes in a cascaded format, each process is easily recognized by anyone who looks at its

Waterfall model is a software engineering process that has sequence of steps which are required for a product to be built or for the completion of a project successfully. This model starts with the requirements analysis phase and end with maintenance having several stages like design, implementation and verification. This model gives us a planned model for developing a product and deploying it in the market. This is also known as a sequential model.