SQL SERVER- Non-Clustered Index

Are the Non-Clustered indexes stored physically in order by the index? Or are they inserted into the index table in order of their creation?

1 2 3 4 5 6 7 .....
or
1 5 4 7 6 .......
Lawrence AverySystem DeveloperAsked:
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PortletPaulfreelancerCommented:
A nonclustered index can be defined on a table or view with a clustered index or on a heap. Each index row in the nonclustered index contains the nonclustered key value and a row locator. This locator points to the data row in the clustered index or heap having the key value. The rows in the index are stored in the order of the index key values, but the data rows are not guaranteed to be in any particular order unless a clustered index is created on the table.
http://msdn.microsoft.com/en-us/library/ms175049.aspx
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