The following example will use the array object pop[recordID,recordFields] which contains population data for North America by country, sex, and time where
recordID is the numerical record id for each line in the database
recordFields is a collection of properties that is created from the selected columns in the database.
The import file may appear as follows:
Country Sex Year Population Canada Male 2000 16 US Female 2002 23 Mexico Male 2004 12 Canada Female 2003 14 US Male 2001 15