About Specifying Data Values When Importing Flexible Format Data
When loading flexible format data, you can specify a constant to save as the value for a specific database field. For example, you could save A40 as the road type for all segments.
Alternatively, you can create a table that specifies data values for a database field based on data in the import file. You can replace specific data values or ranges of data values in an import file with database field values.