An attribute-defining item (ADI) describes, formats, and manipulates data contained within data files. They are located in a file's dictionary or in the account's master dictionary. ADIs are used by nearly all D3 processors to create data interrelationships, format data, or select data.
These default attribute defining items are found in the dictionary of the data file. If no ADIs are explicitly requested in an AQL report, the default fields display automatically.