Semantic Definition Format (SDF)

Created: 2025-03-27
Last Updated: 2025-03-27
Available Formats: XML
HTML
Plain text

Registries included below

Quality Names
Quality Name Prefixes
sdfType Values
Feature Names

Quality Names

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC-ietf-asdf-sdf-23]

Available Formats

CSV

Name	Brief Description	Reference	Change Controller
$comment	source code comments only, no semantics	[RFC-ietf-asdf-sdf-23]	IETF
const	constant value	[RFC-ietf-asdf-sdf-23]	IETF
contentFormat	content format	[RFC-ietf-asdf-sdf-23]	IETF
default	default value	[RFC-ietf-asdf-sdf-23]	IETF
description	long description text	[RFC-ietf-asdf-sdf-23]	IETF
enum	sdfChoice limited to text strings	[RFC-ietf-asdf-sdf-23]	IETF
exclusiveMaximum	exclusive maximum for a number	[RFC-ietf-asdf-sdf-23]	IETF
exclusiveMinimum	exclusive minimum for a number	[RFC-ietf-asdf-sdf-23]	IETF
format	specific format for a text string	[RFC-ietf-asdf-sdf-23]	IETF
items	items of an array	[RFC-ietf-asdf-sdf-23]	IETF
label	short text (no constraints); defaults to key	[RFC-ietf-asdf-sdf-23]	IETF
maxItems	maximum number of items in an array	[RFC-ietf-asdf-sdf-23]	IETF
maxLength	maximum length for a text string (in characters, i.e., Unicode scalar values)	[RFC-ietf-asdf-sdf-23]	IETF
maximum	maximum for a number	[RFC-ietf-asdf-sdf-23]	IETF
minItems	minimum number of items in an array	[RFC-ietf-asdf-sdf-23]	IETF
minLength	minimum length for a text string (in characters, i.e., Unicode scalar values)	[RFC-ietf-asdf-sdf-23]	IETF
minimum	minimum for a number	[RFC-ietf-asdf-sdf-23]	IETF
multipleOf	step size of number	[RFC-ietf-asdf-sdf-23]	IETF
nullable	boolean: can the item be left out?	[RFC-ietf-asdf-sdf-23]	IETF
observable	boolean: can the item be observed?	[RFC-ietf-asdf-sdf-23]	IETF
pattern	regular expression pattern for a text string	[RFC-ietf-asdf-sdf-23]	IETF
properties	named dataqualities for type="object"	[RFC-ietf-asdf-sdf-23]	IETF
readable	boolean: can the item be read?	[RFC-ietf-asdf-sdf-23]	IETF
required	which data items are required?	[RFC-ietf-asdf-sdf-23]	IETF
sdfChoice	named dataqualities for a choice	[RFC-ietf-asdf-sdf-23]	IETF
sdfData	named dataqualities for an independent data type definition	[RFC-ietf-asdf-sdf-23]	IETF
sdfInputData	input data to an action	[RFC-ietf-asdf-sdf-23]	IETF
sdfOutputData	output data of an action or event (sdfRequired applies here)	[RFC-ietf-asdf-sdf-23]	IETF
sdfRef	sdf-pointer to definition being referenced	[RFC-ietf-asdf-sdf-23]	IETF
sdfRequired	pointer-list to declarations of required components	[RFC-ietf-asdf-sdf-23]	IETF
sdfRequiredInputData	pointer-list to declarations of required input data for an action	[RFC-ietf-asdf-sdf-23]	IETF
sdfType	more detailed information about the type of a string	[RFC-ietf-asdf-sdf-23]	IETF
type	general category of data type	[RFC-ietf-asdf-sdf-23]	IETF
uniqueItems	boolean: do the items of the array need to be all different?	[RFC-ietf-asdf-sdf-23]	IETF
unit	engineering unit and scale (per SenML registry)	[RFC-ietf-asdf-sdf-23]	IETF
writable	boolean: can the item be written to?	[RFC-ietf-asdf-sdf-23]	IETF

Quality Name Prefixes

Registration Procedure(s)

Expert Review

Expert(s)

Unassigned

Reference

[RFC-ietf-asdf-sdf-23]

Prefix	Contact	Reference
No registrations at this time.

sdfType Values

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC-ietf-asdf-sdf-23]

Available Formats

CSV

Name	Description	type	JSON Representation	Reference	Change Controller
byte-string	A sequence of zero or more bytes	string	base64url without padding	[RFC 8949, Section 3.4.5.2]	IETF
unix-time	A point in civil time (note 1)	number	POSIX time	[RFC 8949, Section 3.4.2]	IETF

Feature Names

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC-ietf-asdf-sdf-23]

Name	Brief Description	Reference	Change Controller
No registrations at this time.