System Life Cycle
Implementation Stage
Analysis Stage
Design Stage
Documentation
Development and Testing Stage
Valuation Stage
Development
Data capture forms
User recommendation
4 common methods used in fact finding
Questionnaires
Interviews
Observation
Looking at existing paperwork
Data Flow Diagram (DFD)
DFDs help the analyst by showing the data fl ows, input and output requirements, processing and the types of data storage needed
Screen displays and printed reports
System flowcharts
Verification
Validation
File structures
Design and testing strategy/plan
Testing strategies
This section consider some the development stages and testing strategies that are often adopted by system analysis
This method allows the software to be broken down not smaller parts (known as modules)
There is a need to train staff on the new system
Transfer paper files or electronic files to the new system
Changeover to the new system
Scan in the documents
parallel running
Key in the data
Download files to new database
Direct changeover
Pilot implementation / running
Phased implementation
Technical documentation
Once a system is up and running it is necessary do some evaluation and carry out any maintenance if necessary