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Metadata Changelog
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metadata-changelog.md

This page lists changes to the Project Open Data metadata schema by version. Latest changes at the top. Consult repository history for explanations.

Changelog

Version 1.1

Final as of 11/6/2014

Changes made to establish the v1.1 Schema

Catalog Required Fields
  • Adds required conformsTo field to specify the schema version (#309)
  • Adds required dataset field as a container for all datasets listed (#309)
  • Adds optional describedBy field to specify a canonical or customized JSON schema file (#309, #332)
  • Adds optional @context field to specify a JSON-LD Context (#338)
  • Adds optional @id field to specify a JSON-LD Node Identifier (#338)
  • Adds optional @type field to specify a JSON-LD data type (#338)
Dataset Required Fields
  • Changes contactPoint field to an object that contains the name (fn) and email address (hasEmail) (#358)
    • Adds fn field as part of contactPoint replacing earlier use of contactPoint (#358)
    • Renames mbox field to hasEmail and moves to within contactPoint (#358)
  • Changes publisher field to an object that allows multiple levels of organizations (#296)
    • Adds name as part of publisher replacing earlier use of publisher (#296)
    • Adds optional subOrganizationOf field as part of publisher to include parent organization hierarchy (#296)
  • Adds optional @type field to specify a JSON-LD data type (#338)
  • Recommends that identifier uses a URL, but does not require it. (#69)
Dataset Required-if-Applicable Fields
  • Removes webService field. APIs can be described within a distribution using accessURL and format (#291)
  • Renames accessLevelComment field to rights (#353)
  • Changes license field to be a URL (196)
  • Changes distribution field to become required-if-applicable and to always contain the accessURL or downloadURL fields (#217)
Dataset Distribution Fields
  • Adds required-if-applicable downloadURL field to replace earlier use of accessURL and to exist as a field within distribution (#335)
  • Adds required-if-applicable mediaType field to replace earlier use of format and to exist as a field within distribution (#272)
  • Changes accessURL field to represent indirect access and to exist only as an optional field within distribution (#217, #335)
  • Changes format field to a human readable description and to exist only as an optional field within distribution (#272, #293)
  • Adds optional description field for use within distribution (#248)
  • Adds optional title field for use within distribution (#248)
  • Adds optional describedBy field to specify a distribution specific data dictionary (#291, #332)
  • Adds optional describedByType field to specify the format of the data dictionary referenced with describedBy (#291, #332)
  • Adds optional conformsTo field to specify a standard the distribution conforms to (#362)
  • Adds optional @type field to specify a JSON-LD data type (#338)
Expanded Fields
  • Changes accrualPeriodicity field to use ISO 8601 date syntax (#292)
  • Renames PrimaryITInvestmentUII field to primaryITInvestmentUII to use capitalization consistent with the rest of the schema (#284)
  • Renames dataDictionary field to describedBy (#291, #332)
  • Adds optional describedByType field (#291, #332)
  • Adds optional conformsTo field to specify a standard the dataset conforms to (#362)
  • Adds optional isPartOf field to group datasets as a collection (#258)

Version 1.0 FINAL - 9/20/2013

Changes made to establish the v1.0 Schema

“Common Core” Required Fields
  • Aligns modified field to ISO 8601 of least resolution
  • Adds required bureauCode field
  • Adds required programOffice field
  • Renames person field to contactPoint to better align with DCAT
  • Changes the keywords field to an array
“Common Core” Required-if-Applicable Fields
  • Adds required-if-applicable accessLevelComment field
  • Aligns format field to MIME types
  • Aligns temporal field to ISO 8601 of least resolution
  • Changes temporal field to use solidus for date ranges
Expanded Fields
  • Aligns accrualPeriodicity field to DCCDAccrualPeriodicity
  • Aligns issued field to ISO 8601 of least resolution
  • Aligns language field to RFC 5646
  • Changes the language field to an array
  • Removes granularity field
  • Removes size field
  • Removes feed field