SQL Server PolyBase has eased the task of querying the external data sources for the SQL Server big data clusters, by reducing the effort of moving or copying the data for making a query. SQL Server 2019 preview has introduced new connectors to data sources.
Data Lake: The big data cluster allows for a scalable HDFS storage pool. This potentially increases the efficiency of big data storage from external sources.
Scale-out data mart: Big data cluster provides scale-out compute and storage to improve the data analysis. The data can be ingested and stored across multiple data pool nodes as cache, for further analysis.
