Computer Science – 12.1 Program Development Life cycle | e-Consult
12.1 Program Development Life cycle (1 questions)
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V-Model:
Stages: The V-Model is a verification-focused model. It consists of two parallel paths: a development path (requirements analysis, system design, implementation) and a verification path (system specification, system design, unit testing, integration testing, acceptance testing). Each development stage has a corresponding verification stage.
Strengths:
- Strong emphasis on quality assurance: Verification activities are closely aligned with development activities.
- Clear traceability: Requirements are traceable to design, code, and tests.
- Suitable for safety-critical systems: The rigorous verification process makes it suitable for systems where reliability is paramount.
Weaknesses:
- Inflexible: Difficult to accommodate changes to requirements once a stage is complete.
- Limited user involvement: User feedback is typically gathered only at the acceptance testing stage.
- Can be time-consuming: The rigorous verification process can be time-consuming.
Unified Process (UP):
Stages: The Unified Process is an iterative and incremental model. It consists of several phases: Inception, Elaboration, Construction, and Transition. Each phase involves multiple iterations, with each iteration producing a working version of the software.
Strengths:
- High level of flexibility: Easier to accommodate changes to requirements during development.
- Strong user involvement: Users are actively involved throughout the development process.
- Early and continuous testing: Testing is integrated into each iteration.
- Suitable for complex and evolving projects: The iterative nature makes it well-suited for projects where requirements are likely to change.
Weaknesses:
- Requires strong communication and collaboration: Effective communication between developers and users is essential.
- Can be complex to manage: Requires careful planning and coordination of iterations.
- Requires experienced developers: The iterative nature requires experienced developers who can adapt to changing requirements.