Definition: Unique identifier
Variable or set of variables in the data records in a data source or any list of statistical units which is used for
- verifying that the data source (or list of statistical units) includes no more than one data record for each statistical unit, and/or
- record linkage.
European Union, Commission Implementing Regulation (EU) 2017/881 of 23 May 2017 implementing Regulation (EC) No 763/2008 of the European Parliament and of the Council on population and housing censuses, as regards the modalities and structure of the quality reports and the technical format for data transmission, and amending Regulation (EU) No 1151/2010 (Official Journal of the European Union No L 135, 24.5.2017, p. 6 - 14)