+Data indexing is a method to optimize data retrieval from a [database](/wiki/database) or file system. It creates an ordered map, much like a book's index, allowing for swift location of specific [data](/wiki/data) without scanning every entry, thus dramatically improving performance.
+## See also
+- [Data Structure](/wiki/data_structure)
+- [Algorithm](/wiki/algorithm)
+- [Query Optimization](/wiki/query_optimization)
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