# An employee can have multiple skills and speak multiple languages, independently

Canonical URL: <https://datadriven.io/problems/an-employee-can-have-multiple-skills-and-speak-multiple-lang-8a859e06>

Domain: Data Modeling · Difficulty: medium

## Problem

An employee can have multiple skills and speak multiple languages, independently. Storing (employee, skill, language) creates false combinations. Decompose into two separate multi-valued fact tables to achieve 4NF.

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