This document specifies a procedure for data profiling to generate the foundation for performing data quality assessment. This profiling is applicable to data sets that are either originally in a structure of tables and columns or are the output from a transformation to create such a structure. NOTE 1    Data profiling is applicable to all types of database technology. The following are within the scope of this document:     performing structure analysis to determine data element concepts;     performing column analysis to identify relevant data elements, including statistics about a data set;     performing relationship analysis to identify dependencies in a data set. The following are outside the scope of this document:     methods for extracting and sampling data to be profiled from a data set;     deriving data rules;     measuring the extent of nonconformities in a data set. NOTE 2    ISO 8000 8 specifies approaches to measuring data and information quality. This document can be used in conjunction with, or independently of, quality management systems standards.