TL;DR: Hussein Nasser breaks down the nitty-gritty of primary keys versus secondary keys in databases and shows how your choice can make or break performance.
Along the way he tosses in links to support his work (PayPal, YouTube membership), his courses and playlists on backend and database engineering, plus all the gear he uses—from mics and cameras to cables and interfaces—for anyone interested in leveling up their setup.
Watch on YouTube
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