ADDML - Archival Data Description Markup Language.
ADDML is a standard originally developed by the National Archives of Norway. Now it’s maintained in cooperation between the National Archives in Norway, Sweden and Finland.
The standard is used for describing details and structure for flat files exported from databases.
Version 8.3 was released in 2014, and is the latest version.
Version 8.3 has been modified as follows:
XML Schema version 8.3:addml_8.3.xsd
Version 8.2 was released in 2010. Most are still mainly using version 8.2.
XML Schema version 8.2:addml_8.2.xsd