Difference between Cluster and Non-cluster index?

Answer Posted / palpantian

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 nonclustered 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
nonclustered index does not consist of the data pages.
Instead, the leaf nodes contain index rows.

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