1600 CSV Schema Developed by The National Archives, CSV Schema is a human readable text based format that can also be interpreted by applications to validate CSV data. The CSV Schema language is expressed in UTF-8 text. 1 Digital Preservation Department / The National Archives 26 Nov 2015 26 Nov 2015 fmt/800 PUID text/csv-schema MIME 1 Digital Preservation Department The National Archives Digital Preservation Department / The National Archives 1 Digital Preservation Department The National Archives Digital Preservation Department / The National Archives csvs File extension