1. A memory for storing data according to the human metaphor for access by an application program being executed on a data processing system, comprising: a data structure stored in said memory, said data structure including information resident in a database used by said application program provided and including: a primary user data set to organizes data into one or more of four primary categories including a Who data lists, a What data lists, a Where data list, and a When data list, wherein each data list identifies data items stored in a corresponding Who database, What database, Where database, and When database.