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Roadmap to becoming a developer in 2022
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developer-roadmap/content/roadmaps/101-backend/content/108-more-about-databases/105-database-indexes.md

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Database indexes

An index is a data structure that you build and assign on top of an existing table that basically looks through your table and tries to analyze and summarize so that it can create shortcuts.

Free Content An in-depth look at Database Indexing Database Indexing Explained