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Frequently Asked Questions

What are the types of index in SQL?

The different types of indexes are: SQL Server supports two main types of indexes: Clustered and Non-Clustered. They are implemented using a B-tree structure and at the top of each index is the root node, which contains index rows. These store pointers to the next level of index tree.

What is an index or database?

Database index. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure.


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