User409696431 posted
It is explained in documentation:
https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/dataset-datatable-dataview/row-states-and-row-versions
"A row state indicates the status of a row; row versions maintain the values stored in a row as it is modified, including current, original, and default values. For example, after you have made a modification to a column in a row, the row will have a row
state of Modified, and two row versions:
Current, which contains the current row values, and
Original, which contains the row values before the column was modified."
