DA0-002 Visualization and Reporting Practice Question
An organization wants to ensure that all reports use the same definitions for metrics like 'Active Customer' to avoid confusion. Which data governance element should be implemented?
⚠ Common exam trap
DA0-002 often tests the confusion between data governance artifacts, and candidates pick 'single version of truth' because it sounds like the goal, missing that the question asks for the specific element to implement—the data dictionary.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Data dictionary
A data dictionary is a centralized repository that documents the names, definitions, data types, and business rules for data elements such as 'Active Customer.' By defining the metric once and publishing it, all reports and analysts reference the same meaning, eliminating ambiguity. This directly addresses the requirement for consistent metric definitions across the organization.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Row-level security
Why it's wrong here
Row-level security filters which records a user may retrieve, leaving metric definitions untouched, so 'Active Customer' could still be calculated differently per report. It is tempting as a governance control, and would be correct where access to specific data rows must be restricted by user attributes.
- ✓
Data dictionary
Why this is correct
A data dictionary documents standard metric definitions such as 'Active Customer', giving every report author one agreed meaning. This directly satisfies the requirement for consistent definitions, unlike access controls or retention policies, which govern permissions and lifecycle rather than semantics.
- ✗
Single version of truth
Why it's wrong here
A single version of truth is the desired outcome of consistent definitions, not the governance element that defines them; the stem asks what should be implemented. It is tempting as the stated goal, and would be correct where the question asks for the benefit of standardised metric definitions.
- ✗
Data lineage
Why it's wrong here
Data lineage records the origin and transformation path of data, not the agreed business definition of a metric. It is tempting as a governance artefact, and would be correct where tracing how a reported figure was derived through source systems and transformations is required.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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