Geospatial Semantic Web for Spatial Data Sharing

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Key Terms in this Chapter

Web Coverage Service (WCS): The Web Coverage Service provides access to potentially detailed and rich sets of geospatial information in forms that are useful for client-side rendering, multi-valued coverage, and input into scientific models and other clients.

Web Processing Service (WPS): The Web Processing Service defines rules for standardizing inputs and outputs (requests and responses) of geospatial processing services

OGC Web Services: OGC web services are evolutionary web standards that enable integration of different online GIS data and location information. The major OGC web service specifications include Web Feature Service (WFS) specification, Web Map Service (WMS) Specification, Web Coverage Service (WCS) Specifications, Web Processing Service (WPS) Specification, and Catalogue Service (CS) Specifications.

Geospatial Semantic Web: Geospatial Semantic Web is an extension of the current Web where geospatial information is given well-defined meaning by the ontology so that geospatial content can be discovered, queried, and consumed automatically by computers.

Ontology: The term “Ontology” originated in philosophy and has been used in many different ways. In computer and information sciences, an “Ontology” formally represents knowledge using a set of concepts within a domain

Web Map Service (WMS): The Web Map Service is capable of creating and displaying maps that come simultaneously from multiple heterogeneous sources in a standard image format.

Web Feature Service (WFS): The Web Feature Service allows a client to retrieve, query, and manipulate feature-level geospatial data encoded in GML (Geography Markup Language) from multiple sources.

Catalogue Service (CS): The Catalogue Service provides catalogues for OGC web services and supports the ability to publish and search collections of descriptive information (metadata) for data, services, and related information objects.