Provides the user to GIS MAP opertaions 'GetMap', 'GetCapabilities' and 'GetFeatureInfo'. The GetCapabilities operation requests metadata about the operations, services, and data (“capabilities”) that are offered by a WMS server. It retrieves metadata about the service, including supported operations and parameters, and a list of the available layers This will be used first to get the values that can be used for the GetMap and GetFeatureInfo requests. The GetMap operation requests that the server generate a map. The core parameters specify one or more layers and styles to appear on the map, a bounding box for the map extent, a target spatial reference system, and a width, height, and format for the output. The information needed to specify values for parameters such as layers, styles and srs can be obtained from the Capabilities document. The response is a map image, or other map output artifact, depending on the format requested. GeoServer provides a wide variety of output formats. The GetFeatureInfo operation requests the spatial and attribute data for the features at a given location on a map. It is similar to the WFS GetFeature operation, but less flexible in both input and output. Since GeoServer provides a WFS service we recommend using it instead of GetFeatureInfo whenever possible. The one advantage of GetFeatureInfo is that the request uses an (x,y) pixel value from a returned WMS image. This is easier to use for a naive client that is not able to perform true geographic referencing. It retrieves the underlying data, including geometry and attribute values, for a pixel location on a map.
This is a WFS Service which supports the request type ":" GetCapabilities - Generates a metadata document describing a WFS service provided by server as well as valid WFS operations and parameters. DescribeFeatureType - requests information about an individual feature type before requesting the actual data. Specifically, the operation will request a list of features and attributes for the given feature type, or list the feature types available. GetFeature - returns a selection of features from the data source.