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System life cycle (Design (Validation (Range check, Look-up check, Length…
System life cycle
Design
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System flowcharts
Makes use of special symbols that represent input/ output, processing, decisions and data storage
Verification
Double entry
Data is entered twice, using two people, and is then compared
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Documentation
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- People who may need to modify or develop the system further at some later stage
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Analysis
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Data flow diagram
Used to identify inputs, outputs and processing of the current system
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For system specification, used for identifying and justifying suitable hardware for the new system
For system specification, used for identifying and justifying new software for the new system
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