Advanced Applications of SDLC
Design a simple data-flow diagram for a library management system, identifying inputs, processes, and outputs.
How does the iterative incremental SDLC align with Agile development methodologies?
What are two common challenges in the requirements identification stage of the SDLC, and how can they be addressed?
How does the design stage of the SDLC influence the implementation stage? Provide an example.
When would a phased SDLC be more suitable than an iterative incremental SDLC, and why?
Answers and Descriptions:
Answer: Inputs: Book details, user information, loan requests. Processes: Cataloging books, user registration, loan processing. Outputs: Book availability status, loan confirmation, overdue notices.
Description: This question challenges students to create a visual representation of an information system, reinforcing the concept of data-flows.
Image: [Placeholder: Sample data-flow diagram for a library management system]Answer: The iterative incremental SDLC aligns with Agile by developing systems in small, functional increments through repeated cycles (sprints), allowing continuous feedback and adaptation, unlike the linear phased SDLC.
Description: This question connects SDLC to modern development practices, encouraging students to think critically about industry relevance.
Image: [Placeholder: Diagram showing Agile sprints aligned with iterative SDLC]Answer: Challenges include unclear user needs and scope creep. These can be addressed by conducting thorough stakeholder interviews and using prototyping to clarify requirements.
Description: This question tests students’ ability to anticipate and solve practical problems in SDLC, fostering problem-solving skills.
Image: [Placeholder: Image of a prototyping session or stakeholder interview]Answer: The design stage provides detailed specifications (e.g., database schema) that guide coding in the implementation stage. A poor design, like an inefficient schema, can lead to delays or bugs during coding.
Description: This question encourages students to understand the interconnectedness of SDLC stages, promoting a holistic view.
Image: [Placeholder: Example of a database schema influencing code implementation]Answer: A phased SDLC is suitable for projects with well-defined requirements, like a payroll system, because it ensures each stage is complete before proceeding, reducing rework. Iterative SDLC suits projects with evolving requirements, like mobile apps.
Description: This question challenges students to compare SDLC approaches critically, applying them to specific contexts.
Image: [Placeholder: Comparison chart of phased SDLC for payroll vs. iterative SDLC for mobile apps]