I am using the delta sink in the data flow of data factory.
in the settings tab of the delta sink, the key columns are column1 and column2 in the list of columns
what does this mean?
Does this mean that for every load, the system is looking to see which of the other columns have changed for this key (column1 and column2) ?
column 5 - testvalue
column 5 - checkvalue
as per above example, does it mean that the column 5 will be updated for key columns of x,y ?