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2026-08-01 19:40
How Do SQL Database Engines Work?
Introduction
Imagine you own a giant library. Not a small bookshelf — a warehouse with millions
of books. Someone walks up to the front desk and asks:
"Bring me the three highest-rated cookbooks published after 2015, sorted by rating."
You could walk every aisle, open every book, and check each one. That would take
days. Instead, a good librarian uses a catalog, knows exactly which ...
