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DATA-ENGINEERING-BASICS5 MIN READ

Sort Warehouse Tables by Purpose

Classify warehouse layer purpose signals into useful operating categories.

Source contract Transformation logic Quality check Consumer promise The upstream API guarantees updated_at is present on every record Cast cents to decimal dollars in the staging model Fail when customer_id is null in the fact table Dashboard is refreshed by 8:00 a.m. local time Accepted order statuses are pending, paid, refunded, and canceled One row represents one order line at checkout time Map legacy region codes to current sales territories Raw export arrives from Stripe once per hour

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