---
title: "Primary and Foreign Keys in SQL — Explained"
canonical: "https://www.owox.com/video/linking-database-tables"
updated: "2026-09-29"
---

# Linking Database Tables | Primary & Foreign Keys | Data Analytics for Beginners

June 5, 2024 · Ievgen Krasovytskyi

In this video, we are going to talk about linking database tables - the primary and foreign keys.

In this video, you’ll discover:

*   What the Primary Keys are;
*   What the Foreign Keys are;
*   Best practices to select Primary and Foreign Keys;
*   Common mistakes and ways to avoid them;
*   Top 5 Benefits of Key Management
*   SQL to Spreadsheets
*   AI SQL Copilot

👨‍🏫 **Whether you’re a data professional**, a marketer, or just curious about data, this video is your next step in mastering SQL!

🎥 [Learn Basic SQL Queries in 20 minutes…](https://www.youtube.com/watch?v=k7wWlMpKoLQ&t=0s)  

🎥 [Learn Basic SQL Queries in 20 minutes…](https://www.youtube.com/watch?v=va5mpai_gos&t=0s)  

🎥 [How to Use ChatGPT to Write SQL Queri…](https://www.youtube.com/watch?v=VP6SAB5iSXY&t=0s)  

🎥 [8 Data Analytics Terms Everyone Shoul…](https://www.youtube.com/watch?v=6XZPpZ5jW9Q&t=0s)  

🎥 [What Are Metrics & Dimensions? Market…](https://www.youtube.com/watch?v=6myPScZPOcM&t=0s)  

🤝 **Looking for expert help?** [Let our team help you tailor data strategies](/book-a-call).

🎬 Stay data-driven and keep exploring the opportunities your data brings in. Remember: Data always makes sense!

## What changed since this video was recorded?

The problem you just saw didn't disappear — it has even evolved. Teams added more dashboards, more connectors, more AI tools. But the underlying issue stayed the same: analytics logic kept living in too many places.

Teams that scale analytics today fix it by building a reusable analytics system — where definitions live once and power everything else. That's why we built OWOX Data Marts: a reporting system on top of the trusted data in your warehouse, delivering answers safely to dashboards, spreadsheets, and AI.

[Explore our platform approach →](https://www.owox.com/products)

## Stop being the reporting bottleneck

OWOX Data Marts turns your warehouse SQL into governed, reusable reports business teams self-serve in Sheets.

[Get started free](https://www.owox.com/app-signup)

## More videos

[How to Use SUBQUERIES in SQL with Examples · Jul 11, 2024](/video/how-to-use-subqueries-in-sql)

[Joining tables in SQL · Jun 27, 2024](/video/joining-tables-in-sql)

[What is a Query? Data Analytics for Beginners · May 30, 2024](/video/what-is-a-query)

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## Links

Pages this page links to, on this site and on docs.owox.com. Where the page has a Markdown twin, its address follows the link.

- [Let our team help you tailor data strategies](https://www.owox.com/book-a-call) — /book-a-call.md
- [Explore our platform approach →](https://www.owox.com/products)
- [Get started free](https://www.owox.com/app-signup)
- [How to Use SUBQUERIES in SQL with Examples · Jul 11, 2024](https://www.owox.com/video/how-to-use-subqueries-in-sql) — /video/how-to-use-subqueries-in-sql.md
- [Joining tables in SQL · Jun 27, 2024](https://www.owox.com/video/joining-tables-in-sql) — /video/joining-tables-in-sql.md
- [What is a Query? Data Analytics for Beginners · May 30, 2024](https://www.owox.com/video/what-is-a-query) — /video/what-is-a-query.md