• XML Metadata Interchange (XMI)
  
  The main purpose of XMI is to enable easy interchange of metadata between modeling tools(based on the OMG UML) and metadata repositories (OMG MOF based) in distributed heterogeneous environments. XMI integrates three key industry standards: (1) XML - eXtensible Markup Language (2) UML - Unified Modeling Language (3) MOF - Meta Object Facility
  extensible facility interchange language markup meta model modeling modelling mof object omg smif stream-based uml unified xml
  in rd > XML > XMI with interchange metadata rd xmi xml

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