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Unit 7 (Researching Existing Systems (Observation:
This involves the…
Unit 7
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Analysis
identifying the inputs, outputs and processes
- What goes in?
- What happens inside?
- What comes out?
Identifying Problems
- If problems can be fixed, systems will work more smoothly and become more efficient.
New system requirements specification
- The systems analyst specifies a list of requirements for the new system
Documentation
Technical Documentation
- Technical documentation is created to help analyst, designers and programmers who may work in the system in the future
- Technical documentation covers every aspect of the system's development in minute detail
Technical components:
- The purpose of the system
- Hardware requirements
- Operating system required
- How to delete
- How to add records
User documentation
Technical components:
- The purpose of the system
- Hard ware requirements
- Software requirements
- Memory RAM requirements
- Copies of all system design
- User documentation is created for the benefit of anyone who is expected to use the system
- User documentation is essentially a training manual that helps learn the new system
Design
- Detailed plans are created for the proposed system
- it helps to minimize errors and faults
6 Stages of system analysis
- Analysis - Look at the existing system and find improvements
- Design - Plan the proposed system
- Development & Testing - Create the new system and test it
- Implementation - Place the new system into the company
- Documentation - Create user guides for users
- Evaluation - Decide how well the new system is working
Evaluation
Check against the requirements specification:
- The system analyst will go through the requirements specification and check if they have been met
Check the user's response:
- it is essential to to get feedback from the users of the system. Questions such as Do they like it? Does sit make their work easier? and What could be improved?
Implementation
Direct Changeover
This is when the old system stops getting used one day and the new system starts being used in the next
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