Databricks Certified Data Engineer - Associate
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Which of the following statements regarding the relationship between Silver tables and Bronze tables is always true?
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A
Silver tables contain a less refined, less clean view of data than Bronze data.
B
Silver tables contain aggregates while Bronze data is unaggregated.
C
Silver tables contain more data than Bronze tables.
D
Silver tables contain a more refined and cleaner view of data than Bronze tables.
E
Silver tables contain less data than Bronze tables.
Explanation:
In Databricks' Medallion Architecture:
- Bronze tables: Raw, unprocessed data ingested from source systems
- Silver tables: Cleaned, validated, and enriched data with quality checks applied
- Gold tables: Business-level aggregates and summaries for reporting
The key principle is that Silver tables always contain a more refined and cleaner view of data than Bronze tables. Silver tables undergo data quality checks, deduplication, schema enforcement, and enrichment processes that transform the raw Bronze data into a more reliable, structured format.
Options A, B, C, and E are not always true because:
- A is false (Silver is MORE refined)
- B is not always true (aggregation typically happens at Gold level, though Silver may have some aggregation)
- C and E are not always true (data volume can increase or decrease depending on transformations)
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