Delta queries can be serviced by any system that supports temporal tables[0][1], or another mechanism where data changes are tracked. [0] - https://en.wikipedi

Delta queries can be serviced by any system that supports temporal tables[0][1], or another mechanism where data changes are tracked. [0] - https://en.wikipedia.org/wiki/SQL:2011 https://en.wikipedia.org/wiki/SQL:2011 (temporal support) [1] - https://msdn.microsoft.com/en-us/library/dn935015.aspx https://msdn.microsoft.com/en-us/library/dn935015.aspx [2] - http://clarkdave.net/2015/02/historical-records-with-postgresql-and-temporal-tables-and-sql-2011/ http://clarkdave.net/2015/02/historical-records-with-postgre...