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Learn what SQL indexes are, how they speed up queries, and why they matter for applications. Includes examples of indexes and performance comparisons.
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Learn what SQL is, why it was created, and how it powers modern databases. Includes examples of tables, queries, and JOINs to help you understand how relational data works in practice.- Published on
Learn what PostgreSQL is, why it’s one of the most powerful open-source databases, and how developers use it for modern web applications.