Systems Development Life Cycle(SDLC) - Phases And Activities Involved

Phase 1: Preliminary Investigation

1.1 Initial analysis( nature, scope, objective )
1.2 Feasibility study(economical, operational, and technical)
1.3 Suggest alternative solution( maintain, upgrade, change )
1.4 Initial report-( submit report to executives…..make decision to do or not)
 

Phase 2: System Analysis

2.1 Gather Data( Interview, questionare, sampling, observation)
2.2 Data Analysis( check list, carta grid, data flow, break down functions )
2.3 Report writing( about the present system, problem, need for a change)

Phase 3: System Design

3.1 Prepare few system designs( based on cost, technical, operational expertise, describe the new system as a collection of modules or subsystems.)
3.2 Select the best system( security, flexsibility, …prototype)
3.3 Report writing( cost and effect)

Phase 4: System Development

4.1 purchase software
4.2 purchase hardware
4.3 System is tested at various levels.

Phase 5: Implementation

5.1 Change to new system
5.2 Train the users
5.3 Evaluate the system

Phase 6: Maintenance

6.1 check smooth flow of system operation
6.2 improve system where necessary
6.3 conducting maintenance and enhancements as determined by periodic reviews