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In this video, I explained how indexing speeds up databases by reducing disk I/O. I delved into the basics of database structure, disk block reading, and the role of indexes. Without indexes, reading all rows sequentially can be slow, but with indexes, queries become much faster. I demonstrated how creating an index on a specific column can significantly enhance query performance. By efficiently utilizing indexes, database operations can achieve up to an 8x improvement in speed, showcasing the crucial role of indexes in optimizing database performance.
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