# GeoPlatform Linked Open Data

Linked Open Data are structured data interlinked that is understandable by machines and humans.

GeoPlatform's GeoNetwork provides formatters to transfrom metadata into the [JSON-LD](https://json-ld.org/), [RDF DCAT](https://www.w3.org/TR/vocab-dcat-2/), and [DataCite](https://schema.datacite.org/) Linked Data Schemas.

## Getting GeoPlatform's metadata record UUID

GeoPlatform creates a unique UUID for every metadata in GeoPlatform. The UUID for each record can be gotten from the URL or from the page view of the metadata record.

![](jsonld-rdf/url-view.png)

![](jsonld-rdf/page-view.png)

## RDF DCAT

[DCAT is an RDF vocabulary](https://www.w3.org/TR/vocab-dcat-2/) designed to facilitate interoperability between data catalogs published on the Web.

### GeoPlatform GeoNetwork [RDF DCAT End Point](https://geonetwork-opensource.org/manuals/3.12.x/en/api/rdf-dcat.html#rdf-dcat-end-point)

The RDF DCAT end point provides a way of getting information about the catalog, the datasets and services, and links to distributed resources in a machine-readable format. The formats of the output are based on DCAT, an RDF vocabulary that is designed to facilitate interoperability between web-based data catalogs.

URLS

The following URLs are available:

    https://geonetwork.geoplatform.gov/geonetwork/srv/eng/rdf.search?: returns a dcat:Catalog record. By default this will describe all the records in the catalog, but query filters are available (see below)

    https://geonetwork.geoplatform.gov/geonetwork/srv/eng/rdf.metadata.get?uuid= : returns an RDF record for the given UUID

## JSON-LD (JSON for Linking Data)

[JSON-LD](https://json-ld.org/) is a lightweight Linked Data format. It is easy for humans to read and write. It is based on the already successful JSON format and provides a way to help JSON data interoperate at Web-scale. JSON-LD is an ideal data format for programming environments, REST Web services, and unstructured databases such as Apache CouchDB and MongoDB.

API

The follow API is available:

    https://geonetwork.geoplatform.gov/geonetwork/srv/api/records/<UUID>/formatters/jsonld : returns an RDF record for the given UUID

## DataCite

The [DataCite Metadata Schema](https://schema.datacite.org/) is a list of core metadata properties chosen for an accurate and consistent identification of a resource for citation and retrieval purposes, along with recommended use instructions.

API

The follow API is available:

    https://geonetwork.geoplatform.gov/geonetwork/srv/api/records/<UUID>/formatters/datacite : returns an DataCite record for the given UUID