# A teacher can teach multiple courses AND speak multiple languages

Canonical URL: <https://datadriven.io/problems/a-teacher-can-teach-multiple-courses-and-speak-multiple-lang-a0c2d681>

Domain: Data Modeling · Difficulty: medium

## Problem

A teacher can teach multiple courses AND speak multiple languages. These facts are independent. The current schema stores them together, creating a multi-valued dependency. Fix it.

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