The answer is Registry MDM, which creates a virtual single source of truth without data movement. This approach is correct because it uses a registry index to link disparate customer records across legacy systems, providing a unified view while leaving the underlying data physically untouched. For the CompTIA Data+ DA0-001 exam, this question tests your understanding of how Registry MDM balances data consistency with minimal operational impact—a common scenario when organizations need strict control over sensitive customer data but cannot afford downtime or business disruption. A frequent trap is confusing Registry MDM with Consolidation MDM, which physically moves data and would cause the very disruption the committee fears. Remember the key distinction: Registry MDM is a virtual approach that links records, not a physical one that moves them. Memory tip: think of a library card catalog—it tells you where every book is without moving the books themselves.
DA0-001 Comparing and Contrasting Data Concepts Practice Question
This DA0-001 practice question tests your understanding of comparing and contrasting data concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A large financial institution is implementing a data governance framework to comply with new regulations requiring strict control over sensitive customer data. The data governance committee has identified several domains, including customer master data, transaction data, and risk assessment data. They need to decide on a master data management (MDM) approach that ensures a single, authoritative source of customer information across all systems. However, the current environment has multiple legacy systems with conflicting customer records. The committee is concerned about downtime and business disruption during the transition. Which MDM approach best balances data consistency with minimal operational impact?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Registry MDM, which creates a virtual view by linking records without moving data.
Registry MDM is correct because it creates a virtual, unified view of customer data by linking records from multiple legacy systems via a registry index, without physically moving or consolidating data. This approach ensures a single authoritative source of customer information while avoiding downtime and business disruption, as the underlying systems remain unchanged and operational during the transition.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Registry MDM, which creates a virtual view by linking records without moving data.
Why this is correct
Correct: Registry avoids disruption by leaving data in place and creating a unified index.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Centralized MDM, which replaces all systems with one central master system.
Why it's wrong here
Incorrect: Centralized MDM is highly disruptive and requires full migration.
✗
Consolidation MDM, which merges all customer data into a single physical hub.
Why it's wrong here
Incorrect: Consolidation requires data migration and can cause downtime.
✗
Coexistence MDM, which maintains multiple masters with synchronization.
Why it's wrong here
Incorrect: Coexistence does not enforce a single source of truth.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Registry MDM with Consolidation MDM, assuming that a single authoritative source requires physical data movement, when in fact a virtual registry can achieve the same goal with minimal operational impact.
Detailed technical explanation
How to think about this question
Registry MDM uses a registry index (often implemented via a hub-and-spoke architecture with a metadata repository) to store unique identifiers and cross-references for customer records across source systems, enabling real-time or near-real-time data federation without data duplication. In practice, this approach is ideal for environments with high data volume and strict uptime requirements, as it allows querying across systems via a virtual layer (e.g., using SOAP or REST APIs) while preserving the autonomy of legacy systems. A subtle behavior is that data quality issues in source systems are not resolved at the registry level, so data cleansing must occur upstream or via business rules applied during the virtual view creation.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Comparing and Contrasting Data Concepts — This question tests Comparing and Contrasting Data Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Registry MDM, which creates a virtual view by linking records without moving data. — Registry MDM is correct because it creates a virtual, unified view of customer data by linking records from multiple legacy systems via a registry index, without physically moving or consolidating data. This approach ensures a single authoritative source of customer information while avoiding downtime and business disruption, as the underlying systems remain unchanged and operational during the transition.
What should I do if I get this DA0-001 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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