What is an index in SQL? An index is created in a table to increase the performance of queries and the data pages are stored contiguously when the index is created and when the index is new-built. Index allows us to retrieve very fast data from the database and allow us to searching millions of records quickly. How do database indexes work? There are some strategies that make indexes work, 1. Optimize your code. 2. Restructure your data. 3. Compress your data. 4. Materialize them. 5. Redundancy How do indexes help? For Example, suppose is a student and studying a book and this book contains 10,000 pages. In the first day I read some topic “abc” and next day I want to read some another topic “pqr”. I will never manually go through page by page. It is very difficult to go there. In this situation, I a...
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