Certified Data Management Professional – Fundamentals (CDMP) — Question 86

The conceptual Enterprise Data Model may be built using a top-down or bottom up approach. What is the difference?

Answer options

• A. Top-down starts with industry standard models. Bottom-up requires a subject area discriminator.
• B. Top-down uses data flows as a starting point, while bottom-up starts with data lineage.
• C. Bottom-up starts with subject areas and populating them with models. Top-down is based on existing data models.
• D. Top-down starts with subject areas and populating them with models. Bottom-up is based on existing data models.
• E. Top-down and bottom-up are two sides of the same coin.

Correct answer: D

Explanation

The correct answer, D, accurately describes that the top-down approach begins with identifying subject areas and then populating them with models, while the bottom-up approach relies on existing data models. The other options misrepresent the foundational strategies, as A, B, and C do not correctly explain the methods used in top-down and bottom-up approaches.