Exam DMF topic 1 question 177 discussion

Actual exam question from CDMP's DMF

Question #: 177
Topic #: 1

[All DMF Questions]

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

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.

Show Suggested Answer

Suggested Answer: C 🗳️

by 52cb49c at June 1, 2025, 5:31 p.m.

Comments

Submit Cancel

52cb49c

2 weeks, 3 days ago

Selected Answer: D

In the context of building a Conceptual Enterprise Data Model, the top-down and bottom-up approaches differ in their starting points and focus: Top-Down Approach: Starts with business subject areas (e.g., Customer, Product, Order). Focuses on business understanding and strategic alignment. Models are developed based on business requirements, often involving stakeholders and domain experts. Ideal for new initiatives or when aligning data architecture with business goals. Bottom-Up Approach: Starts with existing data models (e.g., from operational systems or databases). Focuses on what data already exists and how it can be organized into subject areas. Useful for reverse-engineering or integrating legacy systems into a broader enterprise model.

upvoted 2 times

...