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Chapter 7: The systems life cycle - Coggle Diagram
Chapter 7: The systems life cycle
Systems analyst
Systems life cycle
Analysis
Design
Input, processing, output, storage
Development and testing
Test design, testing, extreme and abnormal data
Implementation
Hardware, Data files, Training
Documentation
Technical
Purpose of the system, limitations of the system, system flowchart, system architecture, Program coding, Annotations, List of variable used, File structure, Hardware and software requirements, Validation routines
User
How to use the system, sample runs, error messages, trouble-shooting guide, FAQs
Evaluation/maintenance
Evaluation against the requirements specifications
Limitations and improvements
Maintenance
Error correction
Added functionality
Performance improvements
Methods of researching
Observation
Interviews
Questionnaires
Document collection
Requirements specification
Collects data about the existing system and its problems
Validation routine
Length check
Type check
Format check
Presence check
Check digit
Implementation
Direct changeover
Phased implementation
Pilot implementation
Parallel running