Editing XML Metadata Interchange (section)

== Integration of industry standards ==
XMI integrates 4 industry standards:
* [[XML]] – Extensible Markup Language, a [[W3C]] standard.
* [[Unified Modeling Language|UML]] – Unified Modeling Language, an [[Object Management Group|OMG]] modeling standard.
* [[Meta-Object Facility|MOF]] – Meta Object Facility, an [[Object Management Group|OMG]] language for specifying [[Metamodeling|metamodels]].
* MOF – Mapping to XMI

The integration of these 4 standards into XMI allows tool developers of distributed systems to share object models and other metadata.

Several versions of XMI have been created: 1.0, 1.1, 1.2, 2.0, 2.1, 2.1.1, 2.4, 2.4.1, 2.4.2. and 2 5.1. The 2.x versions are radically different from the 1.x series.
{| class="wikitable"
!Version
!Release date
!URL
|-
|2.5.1
|June 2015
|<nowiki>http://www.omg.org/spec/XMI/2.5.1</nowiki>
|-
|2.4.2
|April 2014
|<nowiki>http://www.omg.org/spec/XMI/2.4.2</nowiki>
|-
|2.4.1
|August 2011
|<nowiki>http://www.omg.org/spec/XMI/2.4.1</nowiki>
|-
|2.4
|March 2011
|<nowiki>http://www.omg.org/spec/XMI/2.4</nowiki>
|-
|2.1.1
|December 2007
|<nowiki>http://www.omg.org/spec/XMI/2.1.1</nowiki>
|-
|2.1
|September 2005
|<nowiki>http://www.omg.org/spec/XMI/2.1</nowiki>
|}

The Diagram Definition OMG project is another alternative for metadata interchange, which can also express the layout and graphical representation.<ref name="DD">{{cite web|author=OMG|title=Diagram Definition, Version 1.0|url=http://www.omg.org/spec/DD/1.0/|date=2012-07-01|access-date = 2013-02-21}}</ref>

XMI is an international standard:
;XMI 2.4.2
:[[International Organization for Standardization|ISO]]/[[International Electrotechnical Commission|IEC]] 19509:2014 Information technology — XML Metadata Interchange (XMI)
;XMI 2.0
:[[International Organization for Standardization|ISO]]/[[International Electrotechnical Commission|IEC]] 19503:2005 Information technology — XML Metadata Interchange (XMI)