A company is building its lakehouse on the medallion architecture. Several sources feed the first layer: Parquet files in Amazon S3, events from Kafka, and Salesforce data through Lakeflow Connect. Before any transformation is applied, the engineers must agree on what this first layer should contain. Which statement best describes what belongs in that first layer?
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Correct answer: The raw source data landed as-is and appended incrementally, preserving the original state as the source of truth
Reference: https://docs.databricks.com/aws/en/lakehouse/medallion
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02 — The Myelin Layer · Canonical Discussion
Where the exam tries to trick you — and how those who passed solved it.
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Official Answer (C): The raw source data landed as-is and appended incrementally, preserving the original state as the source of truth
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