A data structure comprising a first set of data fields wherein each data field contains data representing a managed object of an object-oriented model; a second set of data fields wherein each data field contains data representing an instance of a collection class; a third set of data fields wherein each data field contains data representing an instance of a first association class; a fourth set of data fields wherein each data field contains data representing an instance of a data source class; and a fifth set of data fields wherein each data field contains data representing an instance of a second association class. At least one data field of the first set is associated with a data field of the second set by a data field of the third set, and the data field of the second set is also associated with a data field of the fourth set by a data field of the fifth set. An information handling system readable medium having stored thereon said data structure. Methods for modifying data of the data structure.