LLD - Design — Library Management System
You need to design a system for an online bookstore. Which use case would best capture the requirement for purchasing a book?
You need to design a system for an online bookstore. Which use case would best capture the requirement for purchasing a book?
hard📝 Trade-off Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify user goal for purchasing
The user wants to buy a book by selecting, paying, and confirming the order.Step 2: Match use case to options
User selects a book, adds it to cart, enters payment details, and confirms purchase describes the full purchase flow, capturing the requirement clearly.Final Answer:
User selects a book, adds it to cart, enters payment details, and confirms purchase -> Option AQuick Check:
Purchase use case = User selects a book, adds it to cart, enters payment details, and confirms purchase [OK]
Quick Trick: Use cases describe user steps to complete goals [OK]
Common Mistakes:
MISTAKES- Choosing admin or system maintenance actions as use cases
- Ignoring payment and confirmation steps
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