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RAN-DBDEA-00115
Ranvier · DBDEA

Exam DBDEA Topics: governance Difficulty: medium

A bank runs 200+ Delta tables across the catalogs main and finance. Sensitive columns are classified with governed tags. The governance team must guarantee consistent masking rules for all of them, and — critically — table owners must not be able to weaken or remove the protections on their own tables. New tables are created daily and must be covered automatically once they are tagged. Which approach meets these requirements?

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  1. A. Each table owner writes a masking UDF and runs ALTER TABLE ... ALTER COLUMN ... SET MASK on their own tables.
  2. B. ABAC column mask policies at the catalog level using governed tags: automatic coverage, and table owners cannot override them.
  3. C. The governance team creates one dynamic view per table, embedding is_account_group_member() checks in each view definition.
  4. D. The governance team grants SELECT on all sensitive tables only to the compliance_team group and tells everyone else to request extracts.
Reveal answer

Correct answer: ABAC column mask policies at the catalog level using governed tags: automatic coverage, and table owners cannot override them.

Reference: https://docs.databricks.com/aws/en/data-governance/unity-catalog/abac/abac-vs-rls-cm

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Official Answer (B): ABAC column mask policies at the catalog level using governed tags: automatic coverage, and table owners cannot override them.

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