XMI

XML Metadata Interchange (XMI) is an OMG standard showing how to save any Meta Object Facility (MOF) - based models in XML. OMG uses the following description for the metamodel architecture:

Meta-Model	MOF	Example
M3	meta-metamodel	"MOF Model"
M2	meta metadata metamodel	UML metamodel
M1	metadata model	UML Models
M0	data	Modelled systems

So XMI is an attempt to take advantage of

• UML's world dominance
• UML's definition in MOF
• XML's world dominance

and produce a standard way to save UML models in XML, in order to provide modelers with the ability to move UML models between tools.

VBA and DOM

You can use Visual Basic (for Applications) (VBA) and DOM to create XMI. Here are some examples:

• Instantiate an XML DOM Object
• DOM Reference,
  • XML DOM Enumerated Constants
  • XML DOM Objects/Interfaces
  • XML DOM Properties
  • XML DOM Methods
  • XML DOM Events

VBA MMM IAA

MMM can also create an XMI export (later also an import).
More...

See also

• IBM Resources:
  • IBM XMI Toolkit
  • XMI Cameron Laird
  • [1], Working XML: UML, XMI, and code generation, Part 1 by Benoit Marchal.
  • [2], Working XML: UML, XMI, and code generation, Part 2 by Benoit Marchal.
  • [3], Working XML: UML, XMI, and code generation, Part 3 by Benoit Marchal.
  • [4], Working XML: UML, XMI, and code generation, Part 4 by Benoit Marchal.
  • Developers works on XML
• Object by Design
  • Transforming XMI to HTML
• XMI Hackers page
• XMI.eu is a good starting point for investigation. It has a lot of links to XMI resources.

XMI Schemas

• All OMG Specifications, BPDM, IFR, LSR, MOF, PLM, SBVR, SWRadio, UML and XMI.
  • Version 2.0, contains the xsd and xmi model.
  • Version 2.1, contains the specification MOF 2.0/XMI Mapping Specification, v2.1.