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What is the main purpose of requirements in system design?

easy🧠 Conceptual Q11 of Q15
LLD - Design — Library Management System
What is the main purpose of requirements in system design?
ATo write the system's source code
BTo describe how users interact with the system
CTo design the user interface layout
DTo specify what the system must do
Step-by-Step Solution
Solution:

  1. Step 1: Understand the definition of requirements

    Requirements define the functions and features the system must provide.

  2. Step 2: Differentiate from use cases

    Use cases describe user interactions, not the system's core functions.

  3. Final Answer:

    To specify what the system must do -> Option D

  4. Quick Check:

    Requirements = system functions [OK]
Quick Trick: Requirements = what system must do, not how users act [OK]
Common Mistakes:
MISTAKES
  • Confusing requirements with use cases
  • Thinking requirements include UI design
  • Assuming requirements are code instructions

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