Sunday, January 28, 2018

database - Clustered and nonclustered index - SQL Server and Oracle?

Overview of clustered and nonclustered index - not DB specific (as I understand):




Clustered Index: The physical order of data. As a result, a table can only have one clustered index.



Nonclustered Index: One or more nonclustered indexes can be configured per table. Does not directly impact the organization of the data page.



Is there a difference between how Microsoft SQL Server and Oracle 'manage' clustered and nonclustered indexes? Or is it the same across the DBS?



Any guidance would be great!

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