The explosion in the number of data sources, together with the need to analyse new types of data has led many companies to extend their analytical environments beyond the data warehouse to include new data stores and platforms optimised for new analytical workloads. In addition, new data is being captured and stored both in the cloud and on-premises across different geographies and jurisdictions. The result is that data is now housed in multiple data stores inside and outside the corporate firewall in an increasingly distributed data landscape. Also, in some cases, data is now becoming so big that it is too big to move and is subject to potentially conflicting data privacy laws…