Difficulty: Easy
Correct Answer: Incorrect
Explanation:
Introduction / Context:
Database design proceeds from conceptual to logical to physical. The logical model refines entities and relationships without committing to a particular DBMS. The physical model maps those structures onto storage constructs and access paths that are DBMS-specific. This question checks that you can distinguish these levels correctly.
Given Data / Assumptions:
Concept / Approach:
Saying that the logical model is “in terms of a specific technology” confuses logical and physical phases. Only the physical model should be DBMS-specific. Logical design preserves portability and clarity; physical design tailors for performance and operational characteristics.
Step-by-Step Solution:
Verification / Alternative check:
Inspect modeling tool layers: logical diagrams are DBMS-agnostic; physical diagrams include vendor-specific types and options.
Why Other Options Are Wrong:
Common Pitfalls:
Locking into vendor specifics too early; skipping logical normalization and relying entirely on ORM auto-generation.
Final Answer:
Incorrect
Discussion & Comments