Editing Web Feature Service (section)

== Public Interfaces==

===Static Interfaces ===
The static interface model for the [[Open Geospatial Consortium|OGC]] Web Service model appears in the figure below.
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The Transaction and LockFeature operations are also optional.

When writing a WFS, you must implement the following operations:
*GetCapabilities - this queries the WFS service to determine available options.
*DescribeFeatureType - this retrieves the XML schema to allow the WFS client to parse the resultsets.
*GetFeature - this performs the actual query - parameters such as [[bounding box]] and any other filters should be passed in, as appropriate, and the WFS service then returns a GML resultset containing full geometry and feature attributes.

===Dynamic interface updates ===
The client gets updates by one of two mechanisms:
*Notification: Recommended but not mandatory. Depends on the availability of a WNS implementation.
*Polling: Use this method if a WNS implementation is not available.

'''WFS dynamic interface web notification model'''

This model uses the OGC Web Notification Service to send update notifications to registered clients.