The issues related to data types go beyond whether a field is of type string or integer. Consider sales data that is organized by region. The application used by one department may divide the country into four regions: West, Central, South, and East, identified by the letters W, C, S, and E. Another department may differentiate the Pacific region from the mountain region and distinguish the Northeast from the Southeast. Each region is identified by a two-digit number. What number does the letter E correspond to?
