WHO Columns

CREATED_BY  :NUMBER(15) NOT NULL Keeps track of which user created each row
Value:TO_NUMBER(FND_PROFILE.VALUE(’USER_ID’))
CREATION_DATE :DATE NOT NULL:Stores the date on which each row was created
LAST_UPDATED_BY :NUMBER(15) NOT NULL Keeps track of who last updated each row
Value:TO_NUMBER(FND_PROFILE.VALUE(’USER_ID’))
LAST_UPDATE_DATE: DATE NOT NULL:Stores the date on which each row was last updated
LAST_UPDATED_LOGIN :NUMBER(15):Provides access to Information about the operating system login of the user who last updated each row Value: TO_NUMBER(FND_PROFILE.VALUE(’LOGIN_ID’))