Feature Source, Feature, Feature Schema, Class Definition, and Properties
Concepts
Namespaces Used By The Samples
Map, Layer, Layer Group
A map is a graphic, which consists of one or more layers. A layer is a collection of features that have been stylized for rendering as a graphic on the screen. All of the features in a layer have the same class definition.
A layer group is a set of layers whose features all belong to the same feature schema. The layers in the group can be rendered individually or the group of layers can be rendered.