System Development Life Cycle

A system life cycle refers to the stages used to successfully create a system which is exactly what is desired by a customer. This life cycle is used within computing, in software development for example, as well as outside of computing for large-scale projects. The life cycle makes it less likely for a project to fail or be undesirable.  It is used because of the consequences which could be the result of a system failure.  Below the phases of the system life cycle have been detailed.

Phase One: Analysis

• Finding out the purpose of the project and final objectives, as such forming a requirements specification.
• Research (e.g. use of surveys, reports and interviews etc.)
• Any other information required in order to know exactly what is needed..

Phase Two: Design

• How will the system be created?
• Making sure that the system will meet its objectives before it is created.
• Final specification and design

Phase Three: Implementation

• Create the system
• Establishing or setting-up the system
• Preparing the system for use
• Training people to use the system
• Creating instructions so people can use the system

Phase Four: Testing

• Test parts of the system and the system overall to make sure all elements function correctly individually, and that they function correctly together.
• Make sure that those trained to do so can use the system.

Phase Five: Evaluation

• Is it the right system for the problem?
• Is it effective?
• What can be improved next time?

After these phases:

• Maintenance in the form of updating the system to fix problems and make changes so it suits the user's needs.
• Second iteration of the cycle.