Glossary of Terms - W

World Wide Web Consortium. The organization that manages standards for the Worldwide Web.
Web Coverage Service (WCS)
Supports the networked interchange of geospatial data as "coverages" containing values or properties of geographic locations. Unlike the Web Map Service, which returns static maps (server-rendered as pictures), the Web Coverage Service provides access to intact (unrendered) geospatial information.
Web Feature Service (WFS)
OpenGIS Specification that supports INSERT, UPDATE, DELETE, QUERY and DISCOVERY of geographic features. WFS delivers GML representations of simple geospatial features in response to queries from HTTP clients. Clients access geographic feature data through WFS by submitting a request for just those features that are needed for an application.
Web mapping
Dynamic query, access, processing, combination and portrayal of different types of spatial information over the Web.
Web Mapping Service (WMS)
OpenGIS Specification that standardizes the way in which Web clients request maps. Clients request maps from a WMS instance in terms of named layers and provide parameters such as the size of the returned map as well as the spatial reference system to be used in drawing the map.
Web Mapping Testbeds (WMT) Phases 1 and 2
The groundbreaking Web Mapping Testbed Phase 1 (WMT 1), which ran from June, 1999 to October, 1999, yielded candidate interface specifications for Web mapping that were subsequently approved by OGC`s Technical Committee and Planning Committee. The Web Mapping Testbed Phase 2 (WMT 2), which ran from June, 2000 to March, 2001 expanded on this foundation with extensions to those specifications and a set of new draft specifications
Web Registry Service
The Web Registry Service is a software component that supports the run-time discovery and evaluation of resources such as services, datasets, and application schemes.
Web Service Flow Language (WSFL)
Available at:
Web Services
"Web services are self-contained, self-describing, modular applications that can be published, located, and invoked across the Web. Web services perform functions that can be anything from simple requests to complicated business processes. Once a Web service is deployed, other applications (and other Web services) can discover and invoke the deployed service."
Web Services Definition Language (WSDL)
Available at:
Web Services Description Language (WSDL)
The language for describing and encoding services. The Web Services Description Language (WSDL) is a draft specification from W3C to describe networked services in terms of what they can do, where they reside on the network and how to invoke them.
Well-Known Binary Representation for Geometry (WKBGeometry)
Data format that provides a portable representation of a Geometry value as a contiguous stream of bytes. Obtained by serializing a geometric object as a sequence of numeric types drawn from the set {Unsigned Integer, Double} and then serializing each numeric type as a sequence of bytes using one of two well defined, standard, binary representations for numeric types (NDR, XDR).
Well-Known Text Representation of Spatial Reference Systems
Format that provides a standard textual representation for spatial reference system information. The definitions of the well-known text representations are modeled after the POSC/EPSG coordinate data.
See Web Feature Service.
See Web Map Service
WMS Context
XML document that unambiguously describes the state or "context" of a WMS client states that accounts for a specific grouping of one or more maps from one or more map servers can be described in a portable, platform-independent format for storage in a repository of for transmission between WMS clients
Working Group (WG)
In OGC, a group of individuals composed of members of the Technical Committee and invited guests, working to solve some particular problem or problems in a particular arena of interoperable geoprocessing. A particular use of the Working Group structure is to generate Requests for Information or Requests for Proposal, and to evaluate responses.
See Web Registry Service.
Web Services Description Language
Source: PreANVIL Glossary
"World Wide Web: a collection of protocols, based on IP, and infrastructure that enable efficient, user-friendly publishing, discovery and access to digital information."

Overview | A | B | C | D | E | F G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | All

If you have terms that you would like to add to the OGC Glossary or have any other comments or suggestions please contact editor [at]