Specifications and prototyping Flashcards
What are prototypes?
A concrete but partial representation of a system
What is low fidelity prototyping?
A prototype which captures the point
What is high fidelity prototyping?
A prototype which closely resembles the reality of the final product, allowing stakeholders to provide feedback before production.
What are the 3 types of prototyping?
Role of technology
- Powerpoints and paper
Look and feel
- UI desginers
Implementation guide
What are the risks of prototyping?
- Investing too much time on high-fidelity prototyping
- Ad-hoc prototyping code is re-used in real system
- Prototyping is used instead of documentation
- Prototypes might be approved by the wrong stakeholder
Give examples of low fidelity prototyping
- Sketches
- Paper prototypes
What are the qualities of a low fidelity prototype?
- Developed quickly
- Thrown away
- Helps with client acceptance
Give some examples of high fidelity prototypes
- Simulations
- Fully functional mock ups
What are the qualities of a high fidelity prototype?
- Built in software
- Used in realistic studies
- Thrown away
- Helps clients acceptance
What is the difference between requirements and specification?
- Requirements is what the user must be able to do
- Specifications is what the software must be able to do to meet user requirements
How can we write specifications?
- Natural language
- Structured specifications
- Graphical specifications
- Mathematical specifications
What are some good qualities for specifications?
- Correct
- Concise
- Clear
- Traceable
- Tesetable
What is meant by the traceability of a specification?
Every specification should state which user requirement it is supporting
What is meant by the testability of a specification?
Verification a specification has been met
What are the outputs of final specifications?
Tend to have a class description document that incorporates :
- Architecture design
- Interface design
- Database design
- Component design
Explain architecture design
Internal architecture of objects, classes, use of APIs
Explain interface design
Detailed ‘blueprints’ of final user interface
Explain database design
Developers can request data from DB
Explain component design
The exact class structure inside each component
What does a class description document include?
Explain each variable, method and function explaining how we know it works as expected
