You need to create the most efficient index on the tabl…

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You have a reporting database that includes a non-partitioned fact table named Fact_Sales. The table is
persisted on disk.
Users report that their queries take a long time to complete. The system administrator reports that the table
takes too much space in the database. You observe that there are no indexes defined on the table, and many
columns have repeating values.
You need to create the most efficient index on the table, minimize disk storage and improve reporting query
performance.
What should you do?

A.
Create a clustered index on the table.

B.
Create a nonclustered index on the table.

C.
Create a nonclustered filtered index on the table.

D.
Create a clustered columnstore index on the table.

E.
Create a nonclustered columnstore index on the table.

F.
Create a hash index on the table.

Explanation:
The columnstore index is the standard for storing and querying largedata warehousing fact tables. It uses
column-based data storage and query processing to achieve up to 10x query performance gains in your data
warehouse over traditional row-oriented storage, and up to 10x data compression over the uncompressed data
size.
A clustered columnstore index is the physical storage for the entire table.