# A supplier_parts table has a composite key (supplier_id, part_id) plus columns supplier_name and qua

Canonical URL: <https://datadriven.io/problems/a-supplierparts-table-has-a-composite-key-supplierid-par-44747186>

Domain: Data Modeling · Difficulty: medium

## Problem

A supplier_parts table has a composite key (supplier_id, part_id) plus columns supplier_name and quantity. The supplier_name depends only on supplier_id, not the full composite key. This is a partial dependency. Extract suppliers into a separate table to achieve 2NF.

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