2.3 - Software development Flashcards
What is the waterfall lifecycle model?
- sequential software development process divided into distinct phases, each phase completed before next one begins
What are the steps of the waterfall lifecycle model?
- Requirement Gathering and Analysis
- System Design
- Implementation
- Integration and testing
- Deployment
- Maintenance
What are the benefits of the Waterfall Lifecycle model?
- Straightforward to manage
- clearly documented
- well-defined projects
What are the drawbacks of the waterfall model?
- Lack of flexibility
- No Risk analysis
- Limited user Involvement
- late changes are expensive
When is the waterfall model suitable?
- most suitable for projects where requirements are well unerstood and unlikely to change
What is Agile (Extreme) Programming?
- type of agile software development methodology that promotes adaptability and high customer involvement
What are the steps in Agile Programming?
- Planning
- Design
- Coding
- Testing
- Integration
- Feedback and Integration
Benefits of Agile Programming?
- Produces high quality code
- Constant user involvement means high usability
- Flexible to changing requirements
Drawbacks of Agile Programming
- Intensive collaboration can lead to burnout
- May lack documnetation
- Scope Creep: flexible nature may lead to uncontrolled changes in requirements
When is agile programming suitable?
- most suitable for small to medium-sized projects where requirements can change and customer involvement is high
What is the Spiral programming model?
- software development methodology that combines aspects of both iterative (agile) and sequential (waterfall) processes
What are the steps in the spiral programming model?
- Planning
- Risk Analysis
- Engineering next version
- Evaluation and Feedback
- the process repeats, spiralling through these stages, with each loop representing a development phase until final product is ready
Benefits of Spiral programming model?
- Thorough Risk-analysis and mitigation
- Caters to changing user needs
- Produces prototypes throughout
Drawbacks of Spiral programming model?
- Complexity
- Time-consuming
- Expensive
- Not suitable for small projects
When is the Spiral model suitable?
- most suitable for large, complex projects, where requirements may change, and risk management is essential
What is Rapid Application Development (RAD)?
- software development methodology that emphasises fast and iterative development
What are the steps in Rapid Application development (RAD)?
- Requirement planning
- User Design and prototyping
- Construction or iterative development
- Cutover or deployment
- Maintenance and Updates
Benefits of Rapid Application development (RAD)?
- caters to changing user requirements
- highly usable final product
- focuses on core features reducing development time
Drawbacks of Rapid Application development (RAD)?
- Poorer quality documentation
- Dependent on strong team collaboration
- Potential lack of quality (due to focus on speed)
- Not suitable for small projects
- Can lead to scope creep
When is Rapid Application development (RAD) suitable?
- most suitable for projects where rapid delivery is required and where requirements can be developed and refined on the go
