Data Transformation, Cleansing, and Quality – DE Professional Study Guide
This domain accounts for 10% of the exam and covers transforming and cleansing data and enforcing quality, centered on the medallion architecture and Delta Live Tables.
Medallion Architecture
- Bronze — raw ingested data, as-is.
- Silver — cleansed, conformed, deduplicated, typed, quality-validated data.
- Gold — curated, business-level aggregates for reporting/ML.
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