---
title: "Foreign keys and entity relationships"
description: "How can you protect an entity relationship using a foreign key?"
status: "coming-soon"
language: "en"
canonical: "https://bulnik.dev/en/articles/topics/T39.03/"
topicId: "T39.03"
---

> Coming soon — this article is being prepared. Below are its question, intended outcome, and place in the story.

## The question

How can you protect an entity relationship using a foreign key?

## What we will work through

Protect an entity relationship using a foreign key.

## Before you begin

Previously covered: Primary keys and record identity.

- [Primary keys and record identity](/en/articles/topics/T39.02/)