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System Life Cycle (Analysis (5: identify and agree customer requirements,…
System Life Cycle
Analysis
5: identify and agree customer requirements
6: interpret customer requirements
4: Agree the objectives with the clients
3:Identify problems with current system
2: Describe the current system
1: research or collect data from current system
7: produce a cost-benefit analysis
8: identify suitable hardware and software
9: Produce a data flow diagram
Evaluation
compare the final solution with original task
identify any limitations
identify any necessary improvements that need to be made
evaluate the users responses to using the new system
compare test results from the new system with results from the old system
observe users performing set tasks
measure the time taken to complete tasks
interview users to gather responses about how well the new system works
give out questionnaires to gather responses about the ease of use of the new system.
Design
design outputs in the form of screen displays and printed reports
produce systems flowcharts and/or pseudo code
design the screen layouts
select validation rules that need to be used
Design the data capture forms/input forms
design on the file structures
produce any algorithms or program flowcharts
design a testing strategy
Implementation
transfer paper files or electronic files to the new system
key in the data
download files to new database
scan in the documents
Changeover to the new system
parallel running
pilot implementation/running
direct changeover
phased implementation
Development & Testing
modules
Modify module if any errors are found
testing
modules combined to form the final program
modify final program if any errors are found
testing of the final program
Documentation
user documentation
designed to help users to learn how to use the software or system.
technical documentation