Primary & Foreign Keys Explained: SQL Best Practices

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!

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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.

Today, teams that scale analytics don’t fix this with more tools.

They fix it by building a reusable analytics system – where definitions live once and power everything else.

That's why we built OWOX Data Marts.

OWOX exists to help data teams build the reporting system - on top of their trusted data inside the warehouse - so answers to business questions can be delivered safely to dashboards, spreadsheets, and AI.

Explore our platform approach →

Linking Database Tables

Primary & Foreign Keys | Data Analytics for Beginners

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