Explain the main differences between logical and physical DFDs.

Question 1

Logical DFD

Answer 1

Focuses on high-level data flow and processes, abstracting implementation details. Emphasizes “what” and “why.”

Differences: Logical DFDs prioritize functionality understanding

Question 2

Physical DFD

Answer 2

Depicts actual implementation, including hardware, software, and databases. Emphasizes “how.”

Differences: Physical DFDs detail technical implementation.