# Design a Type 2 SCD customer dimension

Canonical URL: <https://datadriven.io/problems/design-a-type-2-scd-customer-dimension-each-row-version-has-c200a9dd>

Domain: Data Modeling · Difficulty: medium

## Problem

Design a Type 2 SCD customer dimension. Each row version has a surrogate key, the natural key, effective/expiration dates, and an is_current flag. When an address changes, a new row is inserted.

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