The following methods get or set a flag based on whether the corresponding ABL temp-table has a before-table defined for it on the application server using the ABL BEFORE-TABLE option (or attribute). This before-table is a temp-table that contains the original records of an ABL temp-table that have been modified as part of a changed ProDataSet, and it corresponds to the set of original DataRow instances maintained internally for a changed ADO.NET DataTable.