SYSTEM DEVELOPMENT LIFE CYCLE

An information system progresses through several phases as it is developed, used, and finally retired. These phases are referred to as a system development life cycle – usually referred to as SDLC.

Planning

Phase Analysis

Phase Design

Phase Implementation

Phase Maintenance

Phase

The original waterfall SDLC, shown above, approaches each phase as a discrete step in the development process. One phase is supposed to be completed before the next phase can begin.

The SDLC is an outline of a process that helps develop successful information systems. The process of planning and building and information system according to the SDLC is referred to as systems analysis and design.

Planning Phase

For creating an information system it’s important to have a plan. Initial plans for an information system are developed during the planning phase. The planning phase for an information system project includes the following activities:

- Assemble the project team

- Justify project

- Choose development methodology

- Develop a project schedule

- Produce a Project Development Plan.

The main goal of these activities is to create a Project Development Plan. Before the project proceeds beyond the planning phase, the Project Development Plan must typically be reviewed and approved by the management. This planning document includes:

A short description of a project, including its scope

A justification for the project, which includes an estimate of the project costs and potential financial benefits

A list of project team participants

A schedule for the project, including an outline of its phases

Project planning begins in the planning phase but stretches throughout the entire project. As the project takes shape, project managers break down the work into tasks and milestones, which can be scheduled and assisted. As tasks are completed, the schedule can be updated and adjusted. Project management software is an effective tool for planning and scheduling. It helps manages track and visualize the complex interactions between tasks. Popular examples include open source software, such as Open WorkBench, and commercial software, such as Microsoft Project.

Date: 2015-01-12; view: 876