---
id: 5e7b9f180b6c005b0e76f08d
title: Databases D
challengeType: 11
isRequired: true
videoId: -orenCNdC2Q
---

## Description
<section id='description'>

</section>

## Tests
<section id='tests'>

```yml
question:
  text: 'What is a foreign key?'
  answers:
    - 'A key that is not supposed to be there.'
    - 'A key that uses non-latin characters.'
    - 'A number that points to the primary key of an associated row in a different table.'
    - 'A key that the "real world" might use to look up a row.'
  solution: 3
```

</section>