What is index in SQL server and advantages of creating indexes in table 01 in Telugu VLR Training

What is index in SQL server  and advantages of creating  indexes in table 01 in Telugu VLR Training 




Indexes are special lookup tables that the database search engine can use to speed up data retrieval without reading the whole table. Simply put, an index is a pointer to data in a table. An index in a database is very similar to an index in the back of a book.

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