Primary Key vs Secondary Key TL;DR

In this quick lecture, Hussein Nasser dives into what sets a primary key apart from a secondary key in your database tables—and why picking the right one can make or break your performance. He unpacks how each key works under the hood, when to use them, and the real-world speed boosts you can snag by choosing wisely.

On top of the demo, you’ll find links to back up his work (PayPal, YouTube membership), plus his courses, podcast, and even the audio/video gear he swears by—perfect if you’re keen to level up your backend engineering game.

Watch on YouTube