6.5.6 Discovery Services
From Geostandards
6 INSPIRE
6.1 Background and Motivation
- 6.1.1 Spatial Data Infrastructures
- 6.1.2 Requirements for a European SDI
- 6.1.3 Existing foundation for a European SDI
- 6.2.1 Background and history
- 6.2.2 The five components of the Directive
- 6.2.3 Implementation, status and schedule
- 6.2.4 Groups and responsibilities within INSPIRE
- 6.2.5 INSPIRE Implementing Rules and INSPIRE Guidance Documents
- 6.2.6 European and Global initiatives in the context of INSPIRE
6.3 Technical Architecture Overview
- 6.3.1 Relationship between the different components, in particular spatial data, metadata, registers, and network services
- 6.3.2 Terminology
6.4 Interoperabilty of spatial data sets / INSPIRE data specifications
- 6.4.1 Requirements of the INSPIRE Directive
- 6.4.2 Interoperability of spatial data
- 6.4.3 INSPIRE data scope
- 6.4.4 Modelling Framework
- 6.4.5 Generic Conceptual Model
- 6.4.6 ISO 19100 series of International Standards
- 6.4.7 Rules for application schemas and feature catalogues
- 6.4.8 Identifier Management
- 6.4.9 Object referencing modelling
- 6.4.10 Coordinate referencing
- 6.4.11 Multi-lingual text and cultural adaptability
- 6.4.12 Data quality
- 6.4.13 Metadata for evaluation and use
- 6.4.14 Multiple representations
- 6.4.15 Consistency between data
- 6.4.16 Portrayal model
- 6.4.17 Conformance
- 6.4.18 Generic Network Model
- 6.4.19 Gazetteers
- 6.4.20 Encoding and data formats
- 6.4.21 INSPIRE registers
- 6.4.22 Annex I data specifications
- 6.4.23 Outlook to Annex II/III data specifications
- 6.4.24 Extensions by countries or communities
The INSPIRE Directive asks Member States in article 11(1) (a) to establish and operate a network of services for the discovery of spatial data sets and services “for which metadata have been created”. “Discovery services making it possible to search for spatial data sets and services on the basis of the content of the corresponding metadata and to display the content of the metadata.” Within the geographic community various names have been assigned to instruments for discovering spatial data and services through the metadata properties; examples are Catalogue Services, Spatial Data Directory, Clearinghouse, Geographic Catalogue and Geodata Discovery Service. In INSPIRE these services are referred to as Discovery Services. The goal of discovery services is to support discovery of data, evaluation and use of spatial data and services through their metadata properties. Metadata is the information and documentation, which makes these resources understandable and sharable for users over time. Indexed and searchable metadata provide a controlled vocabulary against which discovery can be performed. INSPIRE Discovery Services shall provide the functionality for users both to manage and search catalogues for the purpose of discovery and evaluation within the context of the INSPIRE Directive. The network of services should also include the technical possibility to enable public authorities to make their spatial datasets and services available. The INSPIRE Directive specifies that Member States shall ensure that public authorities are given the technical possibility to link their spatial datasets and services to the network. This ‘linking’ service is also offered in the context of a discovery service as a capability of the discovery service.
The draft INSPIRE Discovery Service Technical Guidance Document recommends usage of the CSW ISO AP, OGC Catalogue Services Specification 2.0.2 - ISO Metadata Application Profile for CSW 2.0, version 1.0.0 (OGC 07-045, 2007).
Reference
INSPIRE Network Service Implementing Rule Technical Guidance Discovery Service (Version 2.0)
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