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You have an Azure SQL database that contains a table named factSales. FactSales contains the columns shown in the following table. FactSales has 6 billion rows and is loaded nightly by using a batch process. Which type of compression provides the greatest space reduction for the database?
Correct Answer: D
Columnstore tables and indexes are always stored with columnstore compression. You can further reduce the size of columnstore data by configuring an additional compression called archival compression. Note: Columnstore - The columnstore index is also logically organized as a table with rows and columns, but the data is physically stored in a column-wise data format. Reference: https://docs.microsoft.com/en-us/sql/relational-databases/data-compression/data-compression