Victoria University Sydney Campus (VU SYDNEY )

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IT402 1

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Database

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Indexing in a database is a technique used to improve the speed of data retrieval by allowing the database to locate specific records quickly without scanning the entire table. Similar to an index in a book, a database index provides a structured way to find information efficiently. There are different types of indexing, each serving a unique purpose. A **primary index (clustered index)** organizes data physically based on a key, ensuring fast access to sorted records. A **secondary index (non-c...

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Victoria University Sydney Campus • IT402