How Database Queries Really Work: Revision history

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5 July 2026

  • curprev 14:0914:09, 5 July 2026 Dex talk contribs 2,239 bytes +2,239 Created page with "'''Summary:''' A practical explanation of how database engines locate, filter, and return information. Rather than focusing on SQL syntax, this article explores what happens inside a database when a query is executed, from simple record scanning through to indexes, query planners, and modern optimisation techniques. == Context == === The Natural Assumption === Why most people imagine databases simply reading every record. === The Sieve Analogy === Understanding querie..."
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