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| Excerpt |
|---|
This page includes details on how to map the Data Model to the ISO 19915 metadata standard. |
| Table of Contents |
|---|
| Info | ||
|---|---|---|
| ||
The mappings use ISO 19115:2003. There are more recent versions of the standard available e.g. 19115:2014. This doesn't affect datasets too much. Mapping to the same fields. |
Mapping tables
Each table includes:
- the current information definition
- the ISO 19115:2003 field
...
Dataset
...
Dataset
...
MD_Metadata
describing resource of type DS_DataSet
...
dcat:Dataset
https://www.w3.org/TR/vocab-dcat-3/#Class:Dataset
...
| Info | ||
|---|---|---|
| ||
Remodel dataset, dataset series, dps to show thay are different types of resources. In reality, the metadata about them is very similar. |
| Info | ||
|---|---|---|
| ||
| update definition to one used in ICAO: Identifiable collection of data (ISO 19101*). |
...
Identification of the dataset (eg a URI)
The identification is unique within a service instance
...
- to use and notes.
Resource
asset or means that fulfils a requirement
EXAMPLE Dataset, service, document, person or organization.
Attribute | Type, Multiplicity | Definition | ISO 191115 metadata field |
|---|---|---|---|
identifier | IdentifierType | Special unique identifier permanently assigned to a resource. | MD_DataIdentification.citation.CI_Citation.identifier |
...
@id
- The Identifier of the Dataset
...
title |
...
rename property name to "identifier".
Update definition to "Special unique identifier permanently assigned to an entity." (AIRM)
...
Title of the dataset
...
Note: The different forms of ICAO data sets are listed in ICAO Annex 15 5.3.1.1:
a) AIP data set;
b) terrain data sets;
c) obstacle data sets;
d) aerodrome mapping data sets; and
e) instrument flight procedure data sets.
...
Scope of the dataset expressed as a list of subjects .
...
dcat:theme
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_theme
- The subject theme of the Dataset (using identified vocabulary terms)
The list of possible terms should be registered/published in order to allow URLs to be used. Recommendation is to use a controlled vocabulary.
Consider using AIRM identifiers for resources e.g.
...
Indication on how far the dataset has full content or represents an update.
...
- The collection method of the Dataset (using identified vocabulary terms)
...
| Info | ||
|---|---|---|
| ||
rename property name to "timeSliceType". Update definition to "the type of timeslice contained in of the data set." |
Update is the wrong word. Datasets are not updated. Think of a better word to reflect the temporality model
| Note |
|---|
It is not clear if this is the best DCAT2 field. The semantics do not match easily. We could consider e.g. prov:wasDerivedFrom |
"Release Type" makes more sense. A request has been raised to the DCAT3 WG https://github.com/w3c/dxwg/issues/1289
...
Indication that the dataset has been updated according to the AIRAC System.
...
MD_DataIdentification.extent.EX_Extent.description
Note: this is the same approach as used in DS-META-004 - Indication that this is an AIRAC update
...
dct:accrualMethod
- The encoding conformance of the Dataset (using identified vocabulary terms)
...
The definition of this term makes it clear that it is a statement of the process used to update the data. That is why prov is used.
Consider using AIRM identifiers for resources e.g.
prov:wasGeneratedBy": "urn:aero:airm:1.0.0:ContextualModel:ATMBusinessTerms:AIRAC"
...
Free text clarifying limitations with regard to the use of the dataset.
...
MD_DataIdentification.resourceConstraints.MD_Constraints.useLimitations
...
string | name by which the cited resource is known. | MD_DataIdentification.citation.CI_Citation.title |
...
dct:title
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_title
- The Title of the Dataset
...
| Info | ||
|---|---|---|
| ||
Update definition to "name by which the cited resource is known." (ISO 19115) |
...
Free text providing a short description of the dataset
...
dct:description
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_description
- A Description of the Dataset
...
| Info | ||
|---|---|---|
| ||
rename property name to "description". Update definition to "brief narrative summary of the content of the resource(s)." (ISO 19115) |
...
Indication the main content of the dataset.
...
dct:type
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_type
- The (release) Type of the Dataset (using identified vocabulary terms)
Can this be bundled into an overall classification scheme?
- Note: with list coming from ICAO Annex 15
| Info | ||
|---|---|---|
| ||
rename property name to "form". Update definition to "the form of the data set." |
| Info |
|---|
The Resource is the root for Dataset, DatasetSeries, DataProductSpecification, Notification, Subscription. Therefore these also have identifier and title. |
DataProductSpecification
Metadata about a Data Product Specification.
Attribute | Type, Multiplicity | Definition | ISO 191115 metadata field |
|---|---|---|---|
datasetSeriesIdentifier | IdentifierType | The identifier of the corresponding dataset series. | |
dpsFile | File [1..*] | The file that makes up the data product specification. | MD_Distribution |
Dataset
Identifiable collection of data (ISO 19101*)
Attribute | Type, Multiplicity | Definition | ISO 191115 metadata field |
|---|---|---|---|
conformance | CodeEncodingStandardType | The standard to which the data conforms. | DQ_DataQuality.report.DQ_Eelement.result.DQ_ConformanceResult.specification |
datasetFile | File [1..*] | The file that makes up a dataset. | MD_Distribution |
datasetSeriesIdentifier | IdentifierType | The identifier of the dataset series to which the dataset belongs | MD_DataIdentification.citation.CI_Citation.series |
description | string | Brief narrative summary of the content of the resource(s). | MD_DataIdentification.abstract |
endValidity | date | End of the validity period for the dataset. | MD_DataIdentification.extent.EX_Extent.temporalElement.EX_TemporalExtent.extent |
...
odrl:hasPolicy
- The policy (usage rules) of the Dataset (using vocabulary model)
...
Need to check what is meant here – policy is the most generic approach
...
Standard encoding of the data
...
dct:conformsTo
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_conforms_to
...
ISO mapping is long-winded. Is it correct to treat it this way?
| Info | ||
|---|---|---|
| ||
rename property name to "confromance". Update definition to "the standard to which the data conforms." |
...
Start of the validity period for the dataset
...
| 003 - Validity of the data set | |||
form | CodeDatasetFormType | The form of the data set. | MD_DataIdentification.descriptiveKeywords.MD_Keywords.keyword |
geographicalExtent | Location | The locations defining the scope of the dataset | MD_DataIdentification.extent.EX_Extent. |
...
geographicalElement.EX_ |
...
GeographicalExtent |
...
...
...
dct:temporal.dct:startDate
https://www.w3.org/TR/vocab-dcat-3/#Property:dataset_temporal
- The temporal effective dates of the Datset
...
Consider renaming to startValidity to be consistent.
| Info | ||
|---|---|---|
| ||
rename property name to "startValidity". |
...
End of the validity period for the dataset. When absent, no end is specified.
isAiracUpdate | boolean | Indication that the dataset has been updated according to the AIRAC System. | MD_DataIdentification.extent.EX_Extent. |
...
description |
...
dct:temporal.dct:endDate
https://www.w3.org/TR/vocab-dcat-3/#Property:dataset_temporal
...
| 004 - Indication that this is an AIRAC update | ||
publicationDate | date | Date at which the dataset became available. |
...
id of the corresponding dataseries
...
MD_DataIdentification.citation.CI_Citation.date Note: this is the same approach as used in DS-META-002 - Date and time when provided. |
...
dct:issued
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_release_date
releaseType | CodeReleaseType | Indication if the dataset has full content or represents an update. | MD_DataIdentification. |
...
| descriptiveKeywords. |
...
| MD_ |
...
| Keywords. |
...
| keyword |
...
dct:isPartOf
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_qualified_relation
- Links (to and from) the Datasets Series
...
The locations defining the scope of the dataset
...
startValidity | date | Start of the validity period for the dataset. | MD_DataIdentification.extent.EX_Extent. |
...
temporalElement.EX_ |
...
TemporalExtent.extent |
...
...
dcat:distribution
https://www.w3.org/TR/vocab-dcat-3/#Property:dataset_distribution
- Links to the availability of the dataset (as file and/or data service)
DatasetSeries
...
DatasetSeries
...
dcat:DatasetSeries
https://www.w3.org/TR/vocab-dcat-3/#dataset-series
(exact details under discussion)
...
| title | Change proposal - draft only |
|---|
...
...
dct:spatial
https://www.w3.org/TR/vocab-dcat-3/#Property:dataset_spatial
- The spatial location of the Dataset Series (using vocabulary model)
| Info | ||
|---|---|---|
| ||
rename property name to "geographicalExtent". |
location – look into vcard
Location should be based on AIRM/AIXM model
subject | CodeSubjectType [1..*] | The data subjects covered by the dataset. | MD_DataIdentification.descriptiveKeywords.MD_Keywords.keyword |
useLimitations | string | Limitations with regard to the use of the dataset. | MD_DataIdentification.resourceConstraints.MD_Constraints.useLimitations Note: Can also use e.g. MD_LegalConstraints, MD_SecurityConstraints Note: this is the same approach as used in DS-META-005 - Limitations on use. |
DatasetSeries
Collection of data sets sharing the same product specification (ISO 19115*)
...
Title of the dataset series
...
dct:title
- The Title of the Dataset Series
...
dct:description
- A Description of the Dataset Series
...
Enumeration indicating the main content of the dataset
...
Data subject as defined in ICAO PANS-AIM
...
dcat:theme
- The subject theme of the Dataset Series (using identified vocabulary terms)
...
Free text clarifying limitations with regard to the use of the datasets
...
MD_DataIdentification.resourceConstraints.MD_Constraints.useLimitations
Can also use e.g. MD_LegalConstraints, MD_SecurityConstraints
...
- The policy (usage rules) of the Dataset Series (using vocabulary model)
...
Standard encoding of the data
...
...
Identification of the dataset series (eg a URI)
The identification is unique within a service instance
...
@id
- The Identifier of the Dataset Series
Attribute | Type, Multiplicity | Definition | ISO 191115 metadata field |
|---|---|---|---|
conformance | CodeEncodingStandardType | The standard to which the data conforms. | DQ_DataQuality.report.DQ_Eelement.result.DQ_ConformanceResult.specification |
description | string | Brief narrative summary of the content of the resource(s). | MD_DataIdentification.abstract |
dpsIdentifier | IdentifierType | The identifier of the data product specification that describes the dataset series. | |
form | CodeDatasetFormType | The form of the data sets contained in the datset series. | MD_DataIdentification.descriptiveKeywords.MD_Keywords.keyword |
geographicalExtent | Location [1..*] | The locations defining the scope of the dataset series |
...
. | MD_DataIdentification.extent.EX_Extent.geographicalElement.EX_GeographicalExtent |
...
dct:spatial
- The spatial location of the Dataset Series (using vocabulary model)
...
id of the corresponding data product specification
...
dct:isReferencedBy
- Links (to and from) the Data Product Specification that describes this series
...
dct:dataset
- Links (to and from) the individual Datasets that make up this series
DataProductSpecification
...
DataProductSpecification
...
Identification of the data product specification
The identification is unique within a service instance
...
@id
- The Identifier of the DPS
...
Title of the data product specification
...
dct:title
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_title
- The Title of the DPS
...
dcat:distribution
- Links to the availability of the DPS (as a file)
...
dct:type
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_type
- The type of document (using identified vocabulary terms)
...
dct:references
https://www.w3.org/TR/vocab-dcat-3/#Property:resource_relation
https://dublincore.org/specifications/dublin-core/dcmi-terms/#references
- Links (to and from) the Dataset Series that the DPS describes
Data File
...
File
...
dcat:Distribution
https://www.w3.org/TR/vocab-dcat-3/#Class:Distribution
...
Identification of the dataset file
The identification is unique within a service instance
...
dcat:accessURL
https://www.w3.org/TR/vocab-dcat-3/#Property:distribution_access_url
- The URL of the document/dataset
...
Name of the file
...
dct:title
https://www.w3.org/TR/vocab-dcat-3/#Property:distribution_title
...
Format of the file
...
dct:format
https://www.w3.org/TR/vocab-dcat-3/#Property:distribution_format
- The media type of document/dataset (using identified vocabulary terms)
...
Size of the file in Bytes.
...
dcat:byteSize
https://www.w3.org/TR/vocab-dcat-3/#Property:distribution_size
...
| Note: this is the same approach as used in DS-META-007 - Geographical extent of the data set | |||
subject | CodeSubjectType [1..*] | The data subjects covered by the datset series. | MD_DataIdentification.descriptiveKeywords.MD_Keywords.keyword |
useLimitations | string [0..1] | Limitations with regard to the use of the dataset series. | MD_DataIdentification.resourceConstraints.MD_Constraints.useLimitations Note: Can also use e.g. MD_LegalConstraints, MD_SecurityConstraints Note: this is the same approach as used in DS-META-005 - Limitations on use. |