Question - What are the different rowversions available
Answer -
There are four types of Rowversions.
Current:
The current values for the row. This row version does not exist for rows with a RowState of Deleted.
Default : The row the default version for the current DataRowState. For a DataRowState value of Added, Modified or Current, the default version is Current. For a DataRowState of Deleted, the version is Original. For a DataRowState value of Detached, the version is Proposed.
Original:
The row contains its original values.
Proposed:
The proposed values for the row. This row version exists during an edit operation on a row, or for a row that is not part of a DataRowCollection