A data dictionary path name can be:

    o  A full path name, such as CDD$TOP.MOLLY.SQL.PERSONNEL

    o  A relative path name

    o  A logical name for a full or relative path name

    Unless you use the PATHNAME argument in the CREATE DATABASE
    statement, SQL does not use the data dictionary to store data
    definitions.

    If you specify the PATHNAME argument when you first create a
    database, SQL creates a path name that contains copies of data
    definitions for the database.