Stages of Systems Life Cycle

DEFINITION OF PROBLEM STAGE

• initial look at the existing system to see how it can be improved
• produces a feasibility report
• brief investigation - analyst collects information
• need to identify why current system is not meeting the needs of the organisation, why the system is needed and the purpose of the new system

Reasons for needing a new system:

• organisation wants to computerise a part of the operation that is currently done manually
• the existing system is outdated and no longer suits the needs of the organisation

INVESTIGATION/ANAYLISIS STAGE

• the full nature of the problem is investigated in this stage
• the results of the investigation stage a have to be fully analysed to gain a full understanding of the current system - towards the end of this stage, the user requirements are agreed with client
• it's important that the user requirements are referred to throughout the whole cycle - if not then the system may not fully meet the needs of the end user
• must be completed before the design stage

DESIGN STAGE

• follows requirements specification defined in the investigation/anaylsis stage
• methods of data capture considered to ensure the format of he data capture and method of data capture to be used ared compatiable with the…