Systems, methods, and other embodiments associated with registering a WFS feature type are described. One example method includes creating a feature instance table and a set of collection item tables to register the WFS feature type. Elements in the feature instance table and a collection item table may be related by a feature instance primary key value. The example method may also include producing an r-tree based spatial index for spatial content collection items stored in the set of collection item tables. The method may also include selectively processing a WFS request to manipulate (e.g., insert, delete, update) a WFS feature instance based, at least in part, on the feature instance table and the set of collection item tables. The method may also include selectively processing a WFS query associated with a WFS feature instance based, at least in part, on the r-tree based spatial index.