I'm building an education data warehouse. I have various dimensions that i would like to track changes to i.e. DimStudent, DimClass, DimCollege, DimExamPaper etc. etc. My solution currently drops keys, truncates tables and recreates keys before loading staging tables, which then go on to load Dimension and fact tables.
Therefore, my question is what are the minimum physical changes i need to put in place to --> truncate staging tables prior to load, track changes between staging tables, dim tables and fact tables, to incrementally load rows to dim tables and fact tables? Do i need to add a table/tables to track changes for EACH dimension or fact table? I have looked at examples but there seems to be a fair amount of work for just one table. I have 11 dimensions, 4 fact tables and 22 staging tables.