OMG document number
Explanation
Format
URL
https://www.omg.org/spec/XMI/2.4/PDF
XML schema for the fixed elements in XMI files.
https://www.omg.org/spec/XMI/20100901/XMI.xsd
Contains metamodel, in UML 2.4, for the XMI-specific model elements.
Contains the original model, in MagicDraw format, for the XMI-specific model elements and the diagrams included in the specification.