Liaison AB Subcommittee

OMG maintains active relationships with many other standards bodies and consortia. This is important, as these relationships help reduce duplication (and thus confusion) in the marketplace. In addition, the relationships allow vertical industry-oriented standards bodies and consortia to work with OMG to get the metamodels, APIs and other specifications they require to support their industry standards. Another benefit is to help disseminate information about OMG specifications and our program of work. Liaisons are managed by the Liaison Subcommittee of the OMG's Architecture Board. If you have any questions about these relationships or liaison in general, please contact the Liaison Subcommittee at

The Liaison Subcommittee manages submissions of OMG specifications to ISO JTC 1's Publicly Available Specification (PAS) process. A list of OMG specifications submitted thus far can be found within this table. The Liaison Subcommittee also manages limited access to ISO Standards. For more information, go .


Larry L. Johnson, OMG Vice President and Technical Director
Len Levine, DISA Computer Scientist

Liaisons and Membership Exchanges

Initially, most of OMG's liaisons are informal, started because members of either OMG or another organization see a benefit in coordinating the work of the two. Many of these informal liaisons are later formalized to allow for regular cross participation, either as Formal Liaisons or Membership Exchanges.

The tables below offer an overview of the OMG's liaison relationships. (We have more than one formal liaison with some of these organizations due to their size and structure.)

Formal Liaisons

Many of the established standards development organizations (SDOs), e.g., ISO, already have a liaison procedure in place for coordinating work with other groups where it makes sense. Hence, relationships with such organizations take the form of a Liaison.

Name Web Page Purpose
CEN/TC 287 (Leads to log-in screen) Standardization in the field of digital geographic information for
DMTF (Distributed Management Task Force)  Mapping of the CIM specification to XMI. Development of a ML profile for CIM.
HL7 (Health Level Seven) Coordinate with OMG's Healthcare DTF
ISO Consult this table
ITU-T Standardization Sector Coordinate with OMG's Telecommunications PSIG. OMG has A4 and A5 status with ITU-T.
WinnF (Wireless Innovation Forum)  Coordinate on Software Based Communications
CCSDS (Consultative Committee for Space Data Systems) Coordinate with OMG's Space DTF
Healthcare Services Platform Consortium Collaboration to develop SOA standards to be applied in healthcare.

Membership Exchange

In order to forge a stronger working relationship with other consortia, the OMG will often exchange membership with that organization. The following organizations have reciprocal membership arrangements with the OMG.

Name Web Page Purpose
AIIM (Association for Information and Image Management International) Document management
CBOP (Consortium for Business Object Promotion)-Japan BOI and promotion of MDA in Japan
Energistics MDA for Oil Development
IASB (International Accounting Standards Board) OMG's Finance DTF
IDEAlliance (was GCA - Graphics Communications Association) OMG's Healthcare DTF
IJIS (Integrated Justice Information Systems) Institute Support US NIEM work
INCOSE (International Council on Systems Engineering) Support UML for Systems Engineering and Systems Engineering DSIG
OASIS / Transport for XML
Open GIS Consortium
Standards for Technology in Automotive Retail (STAR) Business Modeling and Integration DTF
The Open Group Certification and Testing
TMForum (TeleManagement Forum) Coordinate with OMG's Telecommunications PSIG on NextGeneration Oper ating Support System (NGOSS)
WfMC (Workflow Management Coalition) OMG workflow activities
W3C (World Wide Web Consortium) XMI and DOM (which uses OMG IDL); MDA

ISO Document Assignments

The ISO Secretariat has allocated to OMG a block of numbers, 19500-19699, for the purpose of identifying ISO standards that originate from OMG. A list of ISO adopted specifications is available here.

ISO Liaison Description
ARO Approved RS Originator Organization (JTC 1 only). This means any OMG-document can be included as a normative reference in a JTC 1 standard. In standards developed by other ISO committees, it is possible to reference a non-ISO document normatively if the committee believes that this is required and the referenced document meets certain criteria (e.g. is available to the public)
Category A Organizations that make an effective contribution to the work of the technical committee or subcommittee for questions dealt with by this technical committee or subcommittee. Such organizations are given access to all relevant documentation and are invited to meetings. They may nominate experts to participate in a working group or project team.
Category B Organizations that have indicated a wish to be kept informed of the work of the technical committee or subcommittee. Such organizations are given access to reports on the work of a technical committee or subcommittee.
Category C Category C is specific to JTC 1 and its subcommittees and is the same as Category D for the other ISO committees (outside of JTC 1).
Category D Organizations that make a technical contribution to and participate actively in the work of a working group, maintenance team or project team. Category D liaison organizations have the right to participate as full members in a working group or project team. Category D liaison experts act as the official representative of the organization by which they are appointed.
PAS Publicly Available Specification. This is ISO JTC 1's Fast Track process whereby a standard from any source can be submitted by a National Body or an A-liaison organization directly into a final JTC 1 ballot, to become an International Standard. The duration of the ballot is six months.


ISO Committee Description OMG Status
ISO/IEC JTC 1 Information Technology Standards PAS and ARO
ISO/IEC JTC 1/ SC7 Software and systems engineering A-Liaison
ISO/IEC JTC 1/ SC29 Coding of audio, picture, multimedia and hypermedia information C-Liaison
ISO/IEC JTC 1/ SC29/ WG11 Coding of moving pictures and audio C-Liaison
ISO/IEC JTC 1/ SC32 Data management and interchange C-Liaison
ISO/IEC JTC 1/ SC32/ WG2 Metadata C-Liaison
ISO/IEC JTC 1/WG 10 Internet of Things C-Liaison
ISO/TC 37 Terminology and other language and content resources A-Liaison
ISO/TC 37/SC 1 Principles and methods A-Liaison
ISO/TC 37/SC 2 Terminographical and lexicographical working methods A-Liaison
ISO/TC 37/SC 3 Systems to manage terminology, knowledge and content A-Liaison
ISO/TC 37/SC 4 Language resource management A-Liaison
ISO/TC 184/SC 2 Automation systems and integration / Robots and robotic devices A-Liaison
ISO/TC 184/SC 4 Automation systems and integration / Industrial data A-Liaison
ISO/TC 184/SC 5 Automation systems and integration / Architecture, communications and integration frameworks B-Liaison
ISO/TC 211 Geographic information/Geomatics A-liaison

ISO Standards

ISO Standards are made available to OMG members for the purpose of specification development only. Please apply to to obtain a copy