What are the difference between clustered and a non-clustered index?

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What are the differences between a clustered and a non-clustered index?

dup http://stackoverflow.com/questions/91688/what-are-the-differences-between-a-clustered-and-a-non-clustered-index — Keng, Dec 07 '10 at 19:05

score 3 · Accepted Answer · edited May 23 '17 at 12:30

A clustered index is a special type of index that reorders the way records in the table are physically stored. Therefore table can have only one clustered index. The leaf nodes of a clustered index contain the data pages.
A non clustered index is a special type of index in which the logical order of the index does not match the physical stored order of the rows on disk. The leaf node of a non clustered index does not consist of the data pages. Instead, the leaf nodes contain index rows.

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