Service Description

Back to LOD interface

The Linked Open Data Interface to the LIDO Terminology uses the base namespace, http://terminology.lido-schema.org. This namespace also forms the base URL for the following services:

URI resolution

Each URI is a valid HTTP URL which provides data of the concept record, or concept scheme metadata. Data or metadata can be requested in several machine-actionable formats. An interactive HTML presentation will be delivered upon requesting the URL via a web browser.

SPARQL queries as web service

Arbitrary statements from the LIDO Terminology can be queried by using the SPARQL clauses SELECT (returns tabular data), DESCRIBE (returns term graphs), or CONSTRUCT (returns transformed graphs) in various serialization formats. http://terminology.lido-schema.org/sparql with parameter “query” acts as the SPARQL endpoint, which also supports federated queries that include other endpoints.

Interactive SPARQL queries

An interactive editor for the development and testing of SPARQL queries is provided at http://terminology.lido-schema.org/sparql. The editor features real-time syntax checking, namespace prefixing, various result formats, and a CSV download for exporting tabular results.

SPARQL usage notes

All RDF statements from the LIDO Terminology are accessible as RDF triples via the default graph.

Additionally, statements about concepts can be referenced as RDF quads via a named graph. The named graph URI identifies the concept scheme to which the respective concept belongs:

   lt:lido00025 ?p ?o

is thus equivalent to

   GRAPH <http://terminology.lido-schema.org/eventType> { lt:lido00025 ?p ?o }

Statements about a concept have the canonical URI as subject. Symbolic URIs can be referenced in SPARQL queries using the xe.vocnet.org/aliasproperty:

   <http://terminology.lido-schema.org/lido00025> ?p ?o

is thus equivalent to

  [ xe:alias <http://terminology.lido-schema.org/eventType/completion> ] ?p ?o