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Note: The following is an excerpt from the actual document. It is provided here as a convenience and is not authoritative. Refer to the original document as the authoritative reference.

This International Standard supports the Meta-Object Facility (MOF) Core defined in ISO/IEC 19508. MOF is the foundation technology for describing metamodels. It covers a wide range of domains and is based on a constrained subset of UML. XML Metadata Interchange (XM I) is a widely used XML interchange format. It defines the following aspects involved in describing objects in XML:

• The representation of objects in terms of XML elements and attributes.
• The standard mechanisms to link objects within the same file or across files. * The validation of XMI documents using XML Schemas.
• Object identity, which allows objects to be referenced from other objects in terms of IDs and UUIDs. : XMI describes solutions to the above issues by specifying EBNF production rules to create XML documents and Schemas that share objects consistently. ~~DISCUSSION:on|Outstanding Issues~~ ~~DISCUSSION:off~~