Semantic Definition Format (SDF) for Data and Interactions of Things

Document Type Replaced Internet-Draft (asdf WG)
Authors Michael Koster  , Carsten Bormann 
Last updated 2020-11-02 (latest revision 2020-06-05)
Replaced by draft-ietf-asdf-sdf
Stream Internent Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Adopted by a WG (wg milestone: Oct 2020 - SDF specification, W... )
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-asdf-sdf
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Semantic Definition Format (SDF) is a format for domain experts to use in the creation and maintenance of data and interaction models in the Internet of Things. It was created as a common language for use in the development of the One Data Model liaison organization (OneDM) definitions. Tools convert this format to database formats and other serializations as needed. An SDF specification describes definitions of SDF Objects and their associated interactions (Events, Actions, Properties), as well as the Data types for the information exchanged in those interactions. A JSON format representation of SDF 1.0 is defined in this document.


Michael Koster (
Carsten Bormann (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)