Question

Explain the concept of clustering index with the help of an example

01 Dec 2023
Answer :
Word Count : 569

An index is a data structure that improves the speed of data retrieval operations on a table at the cost of additional storage space and slower writes. Indexes can be clustered or non-clustered, and they play a crucial role in optimizing query performance.

A clustering index is a type of index in which the rows of a table are physically reordered to match the order of the index. This means that the data in the table is sorted based on the key values of the clustering index. In other words, the index and the actual data are stored together, creating a close relationship between the index and the way the data is stored on disk.

Let's consider an example to illustrate the concept of a clustering index:

### Example: Student Grades Database

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