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You have a database named DB1. The database does not have a memory optimized filegroup.
You create a table by running the following Transact-SQL statement:

The table is currently used for OLTP workloads. The analytics user group needs to perform real-time
operational analytics that scan most of the records in the table to aggregate on a number of columns.
You need to add the most efficient index to support the analytics workload without changing the OLTP
application.
What should you do?
Correct Answer: E
Explanation/Reference:
Explanation:
A nonclustered columnstore index enables real-time operational analytics in which the OLTP workload
uses the underlying clustered index, while analytics run concurrently on the columnstore index.
Columnstore indexes can achieve up to 100xbetter performance on analytics and data warehousing
workloads and up to 10x better data compression than traditional rowstore indexes. These
recommendations will help your queries achieve the very fast query performance that columnstore indexes
are designed to provide.
References:https://msdn.microsoft.com/en-us/library/gg492088.aspx