Difficulty: Easy
Correct Answer: Incorrect
Explanation:
Introduction / Context:
An enterprise data model (EDM) is a conceptual, business-oriented model describing major entity types and their relationships across the enterprise. It is not the same thing as a physical or fully relational schema. This item distinguishes conceptual modeling from relational implementation.
Given Data / Assumptions:
Concept / Approach:
Conceptual → Logical → Physical. The enterprise model lives primarily at the conceptual level. The relational model appears at the logical/physical levels when implementing in a DBMS. Thus, equating an EDM with a relational model is incorrect, even though the EDM will eventually be elaborated into relational structures.
Step-by-Step Solution:
Verification / Alternative check:
Methodologies (e.g., top-down data architecture) explicitly separate enterprise conceptual models from DB-specific relational schemas.
Why Other Options Are Wrong:
Common Pitfalls:
Jumping to physical design too early; mistaking ERDs at enterprise scope for physical table designs.
Final Answer:
Incorrect
Discussion & Comments