In this lecture, Hussein Nasser breaks down the difference between primary keys and secondary keys in your database and shows how picking the right one can seriously speed up your queries. He keeps it practical, explaining when and why you’d use each key and how they impact overall performance.
He also shares ways to support the channel (via PayPal or YouTube membership), promotes his backend and database courses, playlists, and podcast, and even gives a peek at the mic, camera, and design gear that power his videos.
Watch on YouTube
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