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System Life Cycle - Coggle Diagram
System Life Cycle
Development and testing
Remove all unwanted data
User interface testing
Validation and Verification
Test how devices are used
Finallizing file structure
Testing statagies
Analysis
steps involved in analysis:
identify problems with current system
describe input/output/processing of current system
know about the user's demands and requirements
produce data flow diagram
collect data from current system
four common methods for fact-finding:
study existing paperwork
questionnaires
interviews
observation
Documentation
Technical documentation for an Information system
How the system was created
Design
list of tasks to design the system:
design screen layouts
select appropriate data verification / verification rules
design tables / file structures
design input forms
produce algorithms and flowcharts
design output forms / reports
design hardware requirements
design software requirements
Evaluation
things considered when evaluating how well the new system has worked
identify any limitations of the system
identify any necessary improovements that need to be makde
compare the final solutions with the original task
evaluate the user's responses to using the new system
comapre test results from the new system with the results from the old system
observe users performing set tasks(compared old with new)
measure the time taken to complete tasks(comapre old with new)
interview users to gather responses about how well the new system works
give out questionnaires to gather responses about the easy of use of the new system
Implementation