1. Compare warehouse, lake and lakehouse roles
TASK: Map raw CSV, prepared lines and monthly outputs to raw/prepared/serving roles. State what the local fixture does not implement.
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2. Model facts, dimensions and historical context
TASK: Sketch a line-grain analytical model and a monthly serving aggregate. Explain historical price and category-change policies.
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3. Define partitions, retention and quality contracts
TASK: Write a storage decision record covering partition key, retention owner, schema changes, reprocessing and failure handling. Reconcile the serving summary.
Your method:
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Limitations and next action: