This is the text equivalent of the diagram of the Oracle OLAP Java API Model class hierarchy in the modlhier.jpg file. The diagram illustrates that the Model interface has two implementations: the concrete CustomModel class and the abstract MdmModel class. MdmModel is extended by the concrete MdmDimensionCalculationModel class and the abstract MdmDimensionedObjectModel class. MdmDimensionedObjectModel is extended by the MdmAttributeModel and MdmMeasureModel classes.