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Microsoft Exam 70-762 Topic 19 Question 2 Discussion
Topic #: 19
Note: The question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other question in the series. Information and details provided in a question apply only to that question.
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?
A nonclustered columnstore index enables real-timeoperational 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
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