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The Open Geospatial Consortium (OGC) is an international voluntary consensus standards organization that develops and maintains international standards for geospatial content and location-based services, sensor web, Internet of Things, GIS data processing and data sharing.
A WFS describes discovery, query, or data transformation operations. The client generates the request and posts it to a web feature server using HTTP. The web feature server then executes the request. The WFS specification uses HTTP as the distributed computing platform, although this is not a hard requirement.
A WMS server usually serves the map in a bitmap format, e.g. PNG, GIF, JPEG, etc. In addition, vector graphics can be included, such as points, lines, curves and text, expressed in SVG or WebCGM format.
Versions 2.0.0, 2.0.1 and 2.0.2 are subtly different, and different vendors implement them with variations. [5] Typically a CSW server will accept requests in one CSW version only, and it is up to the client to be flexible. e.g. ESRI Geoportal can be configured to harvest documents from CSW servers of a variety of versions and vendor variants [6] such as "GeoNetwork CSW 2.0.2 APISO".
GeoAPI is free software providing a set of Java interfaces for GIS applications. GeoAPI interfaces are derived from the abstract model and concrete specifications published collaboratively by the International Organization for Standardization in its 19100 series of documents and the Open Geospatial Consortium in its abstract and implementation specifications.
Unlike the OGC Web Map Service (WMS), which portrays spatial data as static, server-rendered images (maps), the Web Coverage Service delivers underlying data values along with their detailed descriptions. This enables a rich syntax for queries against the data and returns information with its original semantics, rather than just pictures ...
Simple Features (officially Simple Feature Access) is a set of standards that specify a common storage and access model of geographic features made of mostly two-dimensional geometries (point, line, polygon, multi-point, multi-line, etc.) used by geographic databases and geographic information systems.
GeoServer is a web application, supporting any common servlet container (a standalone distribution is available with the Jetty (web server) as an embedded server). GeoWebCache , a Java-based caching component similar to TileCache , is bundled with GeoServer, but available separately. [ 7 ]