- #MICROSOFT UPDATE CATALOG SEARCH SYNTAX GOOGLE UPGRADE#
- #MICROSOFT UPDATE CATALOG SEARCH SYNTAX GOOGLE LICENSE#
addition of ways to represent loosely structured catalogs, where there is no distinction between a dataset and its distributions. 
addition of dcat:DataService, as a sub-class of dcat:Resource, to support catalog service end-points providing access to data assets. addition of a dcat:Resource class for representing any asset than can be included in the catalog, this is. loosening of constraints in class and property definitions to promote re-use of terms and modularity. The main changes to the DCAT vocabulary have been: This revision extends the original DCAT standard in line with community practice while supporting diverse approaches to data description and dataset exchange. This document defines a major revision of the original DCAT vocabulary () in response to new use cases, requirements and community experience since that publication. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at. Other documents may supersede this document. This section describes the status of this document at the time of its publication. The suggested prefix for the DCAT namespace is dcat Status of This Document It also makes it possible to have a decentralized approach to publishing data catalogs and makes federated search for datasets across catalogs in multiple sites possible using the same query mechanism and structure.Īggregated DCAT metadata can serve as a manifest file as part of the digital preservation process. This can increase the discoverability of datasets and data services. This document defines the schema and provides examples for its use.ĭCAT enables a publisher to describe datasets and data services in a catalog using a standard model and vocabulary that facilitates the consumption and aggregation of metadata from multiple catalogs. In particular, current DCAT deployments that do not overlap with the DCAT 2 new features (e.g., data services, time and space properties qualified relations, packaging) don't need to change anything to remain in conformance with DCAT 2.ĭCAT is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web. #MICROSOFT UPDATE CATALOG SEARCH SYNTAX GOOGLE UPGRADE#
DCAT 2 relaxes constraints and adds new classes and properties, but these changes do not break the definition of previous terms.Īny new implementation is expected to adopt DCAT 2, while the existing implementations do not need to upgrade to it, unless they want to use the new features.
DCAT 2 maintains the DCAT namespace as its terms preserve backward compatibility with DCAT.
#MICROSOFT UPDATE CATALOG SEARCH SYNTAX GOOGLE LICENSE#
Trademark and permissive document license rulesĭCAT 2 supersedes DCAT, but it does not make it obsolete.
This document is also available in this non-normative format: Participate: GitHub w3c/dxwg File a bug Commit history Pull requests Contributors: Makx DekkersĮrrors or issues reported since publication. ( European Commission, Joint Research Centre) (Previously at the University of Oxford) Andrea Perego ( Scientific Computing Department, Science and Technology Facilities Council, UK) ( CNR - Consiglio Nazionale delle Ricerche, Italy) Data Catalog Vocabulary (DCAT) - Version 2Ġ4 February 2020 This version: Latest published version: Latest editor's draft: Implementation report: Previous version: Previous Recommendation: Editors: Riccardo Albertoni
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