type of method for evaluating an identified data quality measure DQ_EvaluationMethodTypeCode method of evaluating the quality of a dataset based on inspection of items within the dataset, where all data required is internal to the dataset being evaluated directInternal method of evaluating the quality of a dataset based on inspection of items within the dataset, where reference data external to the dataset being evaluated is required directExternal method of evaluating the quality of a dataset based on external knowledge indirect