CFields is the collection class and CField is the data item class for the field descriptors associated with the business object. A number of details are stored in the CField object: ReportFieldName, SQLFieldName, TableName, and TableShortName provide a common source for mapping information. For example, the report field descriptor :CmpID: is mapped to the sCompanyID field in the physical table tbCompanyDetail in the database. Although this information is made public, it is not generally used by calling components other than to determine the range of report field descriptors available.