Schema for a generic data distribution record
This schema is centered on the Distribution class for
describing concrete data distributions, such as an individual file, an archive
of files, or a directory of files.
The schema builds on the elements and principles of the Thing and Provenance schemas, and extends them with elements from DCAT vocabulary.
Through the joint set of included concepts and properties this schema supports the description of
- data versions and composition
- data access methods
- data access rights and policies
- related resources, including topics, data types/formats
- provenance of data and related entities
Importantly, all this information can be represented using the
Distribution class as a structural container. Hence this schema
is particularly suitable for systems that (only) support attaching metadata to
data objects.
For more information, see the general documentation, and concrete examples on the documentation pages of individual classes. Some noteworthy examples are
- data type annotation
- data format annotation
- dataset as an outcome of a study
- access to a
Distribution - dataset version in the form of a Git commit
- git-annex remote as a
DataService
The schema is available as
URI: https://concepts.datalad.org/s/distribution/unreleased
Name: distribution-schema
Schema Diagram
erDiagram
Distribution {
uriList access_url
NonNegativeInteger byte_size
W3CISO8601 date_modified
W3CISO8601 date_published
uriList download_url
uriorcurie format
string media_type
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Resource {
W3CISO8601 date_modified
W3CISO8601 date_published
stringList keyword
uri landing_page
string version
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
LicenseDocument {
string license_text
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
DistributionPart {
string name
uriorcurie object
}
DataService {
string download_url_template
uri endpoint_description
uri endpoint_url
W3CISO8601 date_modified
W3CISO8601 date_published
stringList keyword
uri landing_page
string version
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
QualifiedAccess {
}
ThingMixin {
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
ValueSpecificationMixin {
uriorcurie range
string value
}
AttributeSpecification {
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
uriorcurie range
string value
}
Property {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Statement {
uriorcurie object
}
Thing {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
ValueSpecification {
uriorcurie range
string value
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Annotation {
uriorcurie annotation_tag
string annotation_value
}
Identifier {
uriorcurie creator
string notation
NodeUriOrCurie schema_type
}
IssuedIdentifier {
string schema_agency
uriorcurie creator
string notation
NodeUriOrCurie schema_type
}
ComputedIdentifier {
uriorcurie creator
string notation
NodeUriOrCurie schema_type
}
Checksum {
uriorcurie creator
HexBinary notation
NodeUriOrCurie schema_type
}
DOI {
string schema_agency
uriorcurie creator
string notation
NodeUriOrCurie schema_type
}
Role {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Relationship {
uriorcurie object
}
Location {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
InstantaneousEvent {
W3CISO8601 at_time
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Agent {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Activity {
W3CISO8601 ended_at
W3CISO8601 started_at
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Entity {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
SoftwareAgent {
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Person {
stringList additional_names
string family_name
string given_name
string honorific_name_prefix
string honorific_name_suffix
string formatted_name
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Organization {
string name
string short_name
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Project {
string short_name
string title
W3CISO8601 ended_at
W3CISO8601 started_at
uriorcurie id
uriorcurieList broad_mappings
uriorcurieList close_mappings
string description
uriorcurieList exact_mappings
uriorcurieList narrow_mappings
uriorcurieList related_mappings
NodeUriOrCurie schema_type
}
Distribution ||--}o DataService : "access_service"
Distribution ||--}o Checksum : "checksum"
Distribution ||--}o Distribution : "has_part"
Distribution ||--|o Resource : "is_distribution_of"
Distribution ||--|o LicenseDocument : "license"
Distribution ||--}o QualifiedAccess : "qualified_access"
Distribution ||--}o DistributionPart : "qualified_part"
Distribution ||--}o Identifier : "identifiers"
Distribution ||--}o Relationship : "qualified_relations"
Distribution ||--}o Agent : "attributed_to"
Distribution ||--}o Entity : "derived_from"
Distribution ||--}o Activity : "generated_by"
Distribution ||--}o Thing : "relations"
Distribution ||--}o Annotation : "annotations"
Distribution ||--}o AttributeSpecification : "attributes"
Distribution ||--}o Statement : "characterized_by"
Resource ||--|o Agent : "contact_point"
Resource ||--|o Resource : "is_part_of"
Resource ||--|o Resource : "is_version_of"
Resource ||--}o Identifier : "identifiers"
Resource ||--}o Relationship : "qualified_relations"
Resource ||--}o Agent : "attributed_to"
Resource ||--}o Entity : "derived_from"
Resource ||--}o Activity : "generated_by"
Resource ||--}o Thing : "relations"
Resource ||--}o Annotation : "annotations"
Resource ||--}o AttributeSpecification : "attributes"
Resource ||--}o Statement : "characterized_by"
LicenseDocument ||--}o Identifier : "identifiers"
LicenseDocument ||--}o Relationship : "qualified_relations"
LicenseDocument ||--}o Agent : "attributed_to"
LicenseDocument ||--}o Entity : "derived_from"
LicenseDocument ||--}o Activity : "generated_by"
LicenseDocument ||--}o Thing : "relations"
LicenseDocument ||--}o Annotation : "annotations"
LicenseDocument ||--}o AttributeSpecification : "attributes"
LicenseDocument ||--}o Statement : "characterized_by"
DataService ||--|o Agent : "contact_point"
DataService ||--|o Resource : "is_part_of"
DataService ||--|o Resource : "is_version_of"
DataService ||--}o Identifier : "identifiers"
DataService ||--}o Relationship : "qualified_relations"
DataService ||--}o Agent : "attributed_to"
DataService ||--}o Entity : "derived_from"
DataService ||--}o Activity : "generated_by"
DataService ||--}o Thing : "relations"
DataService ||--}o Annotation : "annotations"
DataService ||--}o AttributeSpecification : "attributes"
DataService ||--}o Statement : "characterized_by"
QualifiedAccess ||--}o DataService : "access_service"
ThingMixin ||--}o Annotation : "annotations"
ThingMixin ||--}o AttributeSpecification : "attributes"
ThingMixin ||--}o Statement : "characterized_by"
AttributeSpecification ||--|| Property : "predicate"
AttributeSpecification ||--}o Annotation : "annotations"
AttributeSpecification ||--}o AttributeSpecification : "attributes"
AttributeSpecification ||--}o Statement : "characterized_by"
Property ||--}o Thing : "relations"
Property ||--}o Annotation : "annotations"
Property ||--}o AttributeSpecification : "attributes"
Property ||--}o Statement : "characterized_by"
Statement ||--|| Property : "predicate"
Thing ||--}o Thing : "relations"
Thing ||--}o Annotation : "annotations"
Thing ||--}o AttributeSpecification : "attributes"
Thing ||--}o Statement : "characterized_by"
ValueSpecification ||--}o Thing : "relations"
ValueSpecification ||--}o Annotation : "annotations"
ValueSpecification ||--}o AttributeSpecification : "attributes"
ValueSpecification ||--}o Statement : "characterized_by"
Role ||--}o Thing : "relations"
Role ||--}o Annotation : "annotations"
Role ||--}o AttributeSpecification : "attributes"
Role ||--}o Statement : "characterized_by"
Relationship ||--}| Role : "roles"
Location ||--}o Identifier : "identifiers"
Location ||--}o Relationship : "qualified_relations"
Location ||--}o Thing : "relations"
Location ||--}o Annotation : "annotations"
Location ||--}o AttributeSpecification : "attributes"
Location ||--}o Statement : "characterized_by"
InstantaneousEvent ||--}o Identifier : "identifiers"
InstantaneousEvent ||--}o Relationship : "qualified_relations"
InstantaneousEvent ||--}o Thing : "relations"
InstantaneousEvent ||--}o Annotation : "annotations"
InstantaneousEvent ||--}o AttributeSpecification : "attributes"
InstantaneousEvent ||--}o Statement : "characterized_by"
Agent ||--}o Agent : "acted_on_behalf_of"
Agent ||--|o Location : "at_location"
Agent ||--}o Identifier : "identifiers"
Agent ||--}o Relationship : "qualified_relations"
Agent ||--}o Thing : "relations"
Agent ||--}o Annotation : "annotations"
Agent ||--}o AttributeSpecification : "attributes"
Agent ||--}o Statement : "characterized_by"
Activity ||--|o Location : "at_location"
Activity ||--}o Identifier : "identifiers"
Activity ||--}o Relationship : "qualified_relations"
Activity ||--}o Agent : "associated_with"
Activity ||--}o Activity : "informed_by"
Activity ||--}o Thing : "relations"
Activity ||--}o Annotation : "annotations"
Activity ||--}o AttributeSpecification : "attributes"
Activity ||--}o Statement : "characterized_by"
Entity ||--}o Identifier : "identifiers"
Entity ||--}o Relationship : "qualified_relations"
Entity ||--}o Agent : "attributed_to"
Entity ||--}o Entity : "derived_from"
Entity ||--}o Activity : "generated_by"
Entity ||--}o Thing : "relations"
Entity ||--}o Annotation : "annotations"
Entity ||--}o AttributeSpecification : "attributes"
Entity ||--}o Statement : "characterized_by"
SoftwareAgent ||--}o Agent : "acted_on_behalf_of"
SoftwareAgent ||--|o Location : "at_location"
SoftwareAgent ||--}o Identifier : "identifiers"
SoftwareAgent ||--}o Relationship : "qualified_relations"
SoftwareAgent ||--}o Thing : "relations"
SoftwareAgent ||--}o Annotation : "annotations"
SoftwareAgent ||--}o AttributeSpecification : "attributes"
SoftwareAgent ||--}o Statement : "characterized_by"
Person ||--}o Agent : "acted_on_behalf_of"
Person ||--|o Location : "at_location"
Person ||--}o Identifier : "identifiers"
Person ||--}o Relationship : "qualified_relations"
Person ||--}o Thing : "relations"
Person ||--}o Annotation : "annotations"
Person ||--}o AttributeSpecification : "attributes"
Person ||--}o Statement : "characterized_by"
Organization ||--}o Agent : "acted_on_behalf_of"
Organization ||--|o Location : "at_location"
Organization ||--}o Identifier : "identifiers"
Organization ||--}o Relationship : "qualified_relations"
Organization ||--}o Thing : "relations"
Organization ||--}o Annotation : "annotations"
Organization ||--}o AttributeSpecification : "attributes"
Organization ||--}o Statement : "characterized_by"
Project ||--|o Location : "at_location"
Project ||--}o Identifier : "identifiers"
Project ||--}o Relationship : "qualified_relations"
Project ||--}o Agent : "associated_with"
Project ||--}o Activity : "informed_by"
Project ||--}o Thing : "relations"
Project ||--}o Annotation : "annotations"
Project ||--}o AttributeSpecification : "attributes"
Project ||--}o Statement : "characterized_by"
Classes
| Class | Description |
|---|---|
| Annotation | A tag/value pair with the semantics of OWL Annotation. |
| AttributeSpecification | An attribute is conceptually a thing, but it requires no dedicated identifier (id). Instead, it is linked to a Thing via its attributes slot and declares a predicate on the nature of the relationship. |
| DistributionPart | An association class for attaching additional information to a hasPart relationship. |
| Identifier | An identifier is a label that uniquely identifies an item in a particular context. Some identifiers are globally unique. All identifiers are unique within their individual scope. |
| ComputedIdentifier | An identifier that has been derived from information on the identified entity. |
| Checksum | A Checksum is a value that allows to check the integrity of the contents of a file. Even small changes to the content of the file will change its checksum. This class allows the results of a variety of checksum and cryptographic message digest algorithms to be represented. |
| IssuedIdentifier | An identifier that was issued by a particular agent with a notation that has no (or an undefined) relation to the nature of the identified entity. |
| DOI | Digital Object Identifier (DOI; ISO 26324), an identifier system governed by the DOI Foundation, where individual identifiers are issued by one of several registration agencies. |
| QualifiedAccess | An association class for attaching additional information to an access_service relationship between a dcat:Distribution and a dcat:DataService. |
| Relationship | An association class for characterizing the relation between two things with the role(s) the object had with respect to the subject. A relationship is always between two things only, but can be annotated with multiple roles (for example, a person having both an author role with respect to a dataset, and also being the person who is legally responsible contact for it). |
| Statement | An RDF statement that links a predicate (a Property) with an object (a Thing) to the subject to form a triple. A Statement is used to qualify a relation to a Thing referenced by its identifier. For specifying a qualified relation to an attribute that has no dedicated identifier, use an AttributeSpecification. |
| Thing | The most basic, identifiable item. In addition to the slots that are common between a Thing and an AttributeSpecification (see ThingMixin), two additional slots are provided. The id slot takes the required identifier for a Thing. The relation slot allows for the inline specification of other Thing instances. Such a relation is unqualified (and symmetric), and should be further characterized via a Statement (see characterized_by). From a schema perspective, the relation slots allows for building self-contained, structured documents (e.g., a JSON object) with arbitrarily complex information on a Thing. |
| Activity | An activity is something that occurs over a period of time and acts upon or with entities; it may include consuming, processing, transforming, modifying, relocating, using, or generating entities. |
| Project | A collective endeavour of some kind. Typically it is a planned process that is undertaken or attempted to meet some requirement, or to achieve a particular goal. |
| Agent | Something that bears some form of responsibility for an activity taking place, for the existence of an entity, or for another agent's activity. |
| Organization | A social or legal instititution such as a company, a society, or a university. |
| Person | Person agents are people, alive, dead, or fictional. |
| SoftwareAgent | Running software. |
| Entity | A physical, digital, conceptual, or other kind of thing with some fixed aspects; entities may be real or imaginary. |
| Distribution | A specific representation of data, which may come in the form of a single file, or an archive or directory of many files, may be standalone or part of a dataset. |
| LicenseDocument | A legal document giving official permission to do something with a resource. |
| Resource | Resource published or curated by a single agent. |
| DataService | A collection of operations that provides access to one or more distributions or data processing functions. |
| InstantaneousEvent | A moment of a transition from one particular state of the world to another. |
| Location | A location can be an identifiable geographic place (ISO 19112), but it can also be a non-geographic place such as a directory, row, or column. As such, there are numerous ways in which location can be expressed, such as by a coordinate, address, landmark, and so forth. |
| Property | An RDF property, a Thing used to define a predicate, for example in a Statement. |
| Role | A role is the function of a resource or agent with respect to a subject, in the context of resource attribution or relationships. |
| ValueSpecification | A Thing that is a value of some kind. This class can be used to describe an outcome of a measurement, a factual value or constant, or other qualitative or quantitative information with an associated identifier. If no identifier is available, an AttributeSpecification can be used within the context of an associated Thing (attributes). |
| ThingMixin | Mix-in with the common interface of Thing and AttributeSpecification. This interface enables type specifications (rdf:type) for things and attributes via a type designator slot to indicate specialized schema classes for validation where a slot's range is too generic. A thing or attribute can be further describe with statements on qualified relations to other things (characterized_by), or inline attributes (attributes). A set of mappings slots enables the alignment for arbitrary external schemas and terminologies. |
| ValueSpecificationMixin | Mix-in for a (structured) value specification. Two slots are provided to define a (literal) value (value) and its type (range). |
Slots
| Slot | Description |
|---|---|
| about | A relation of an information artifact to the subject, such as a URL identifyi... |
| access_service | A data service that gives access to a distribution |
| access_url | URL that gives access to the subject |
| acted_on_behalf_of | Assign the authority and responsibility for carrying out a specific activity ... |
| additional_names | Additional name(s) associated with the subject, such as one or more middle na... |
| address | Physical address of the subject, such as a postal address, a bibliographic lo... |
| affiliation | An organization that an agent is affiliated with |
| annotation_tag | A tag identifying an annotation |
| annotation_value | The actual annotation |
| annotations | A record of properties of the metadata record on a subject, a collection of t... |
| associated_with | An activity association is an assignment of responsibility to an agent for an... |
| at_location | Associate the subject with a location |
| at_time | Time at which an instanteneous event takes place or took place |
| attributed_to | Attribution is the ascribing of an entity to an agent |
| attributes | Declares a relation that associates a Thing (or another attribute) with an ... |
| broad_mappings | A list of terms from different schemas or terminology systems that have broad... |
| byte_size | The size of a distribution in bytes |
| characterized_by | Qualifies relationships between a subject Thing and an object Thing with ... |
| checksum | The checksum property provides a mechanism that can be used to verify that th... |
| close_mappings | A list of terms from different schemas or terminology systems that have close... |
| conforms_to | An established standard to which the subject conforms |
| contact_point | Relevant contact information for the subject |
| creator | An agent responsible for making an entity |
| date_modified | Timepoint at which the subject was (last) changed, updated or modified |
| date_published | Timepoint at which the subject was (last) published |
| derived_from | Derivation is a transformation of an entity into another, an update of an ent... |
| description | A free-text account of the subject |
| distribution | An available distribution of a resource |
| download_url | URL that gives direct access to the subject in the form of a downloadable fil... |
| download_url_template | A URL template with placeholders enclosed in braces ({example}) |
| Email address associated with an entity | |
| ended_at | End is when an activity is deemed to have been ended by some trigger |
| endpoint_description | A description of the services available via the end-points, including their o... |
| endpoint_url | The root location or primary endpoint of a service (a Web-resolvable IRI) |
| exact_mappings | A list of terms from different schemas or terminology systems that have ident... |
| family_name | The (inherited) family name of the subject |
| format | The file format of a distribution |
| formatted_name | A formatted text corresponding to the name of the subject |
| generated_by | Generation is the completion of production of a new entity by an activity |
| given_name | The given (non-inherited) name of the subject |
| has_part | A related resource that is included either physically or logically in the des... |
| honorific_name_prefix | The honorific prefix(es) of the subject's name |
| honorific_name_suffix | The honorific suffix(es) of the subject's name |
| id | Persistent and globally unique identifier of a Thing |
| identifiers | An unambiguous reference to the subject within a given context |
| informed_by | Communication is the exchange of an entity by two activities, one activity us... |
| is_distribution_of | Inverse property of dcat:distribution |
| is_part_of | A related resource that is included either physically or logically in the des... |
| is_version_of | A related resource of which the described resource is a version |
| keyword | One or more keywords or tags describing the resource |
| landing_page | A Web page that can be navigated to in a Web browser to gain access to a reso... |
| license | A legal document under which the resource is made available |
| license_text | A copy of the actual text of a license reference, file or snippet that is ass... |
| mappings | A list of terms from different schemas or terminology systems that have compa... |
| media_type | The media type of a distribution as defined by IANA |
| name | Name of the subject |
| narrow_mappings | A list of terms from different schemas or terminology systems that have narro... |
| notation | String of characters such as "T58:5" or "30:4833" used to uniquely identify a... |
| object | Reference to a Thing within a Statement |
| predicate | Reference to a Property within a Statement |
| qualified_access | Link to a description of a access_service relationship with `dcat:DataServi... |
| qualified_part | Qualified a hasPart relationship with another entity |
| qualified_relations | Characterizes the relationship or role of an entity with respect to the subje... |
| range | Declares that the value of a Thing or AttributeSpecification are instance... |
| related_mappings | A list of terms from different schemas or terminology systems that have relat... |
| relations | Declares an unqualified relation of the subject Thing to another Thing |
| roles | Describes the function of an entity or agent (object) within the scope of a `... |
| same_as | Declares that the subject and an object are equal |
| schema_agency | Name of the agency that issued an identifier |
| schema_type | State that the subject is an instance of a particular schema class |
| short_name | A shortened name for the subject |
| started_at | Start is when an activity is deemed to have been started by some trigger |
| title | A summarily description of the subject |
| value | Value of a thing |
| version | Version indicator (name or identifier) of a resource |
Enumerations
| Enumeration | Description |
|---|---|
Types
| Type | Description |
|---|---|
| Boolean | A binary (true or false) value |
| Curie | a compact URI |
| Date | a date (year, month and day) in an idealized calendar |
| DateOrDatetime | Either a date or a datetime |
| Datetime | The combination of a date and time |
| Decimal | A real number with arbitrary precision that conforms to the xsd:decimal speci... |
| Double | A real number that conforms to the xsd:double specification |
| EmailAddress | RFC 5322 compliant email address |
| Float | A real number that conforms to the xsd:float specification |
| HexBinary | hex-encoded binary data |
| Integer | An integer |
| Jsonpath | A string encoding a JSON Path |
| Jsonpointer | A string encoding a JSON Pointer |
| Ncname | Prefix part of CURIE |
| Nodeidentifier | A URI, CURIE or BNODE that represents a node in a model |
| NodeUriOrCurie | A type referencing an graph node |
| NonNegativeInteger | An integer |
| Objectidentifier | A URI or CURIE that represents an object in the model |
| Sparqlpath | A string encoding a SPARQL Property Path |
| String | A character string |
| Time | A time object represents a (local) time of day, independent of any particular... |
| Uri | a complete URI |
| Uriorcurie | a URI or a CURIE |
| W3CISO8601 | W3C variant/subset of IS08601 for specifying date(times) |
Subsets
| Subset | Description |
|---|---|