A Group object (class com.infoengine.object.factory.Group) is a container for Element objects (class com.infoengine.object.factory.Element), and an Element object is a container for Att objects (class com.infoengine.object.factory.Att). Usually, an Element object represents a business object or a row from a database table (in the case of simple database adapters). An Att object represents a single attribute of a business object. Each Att object has a name and one or more values. A value of an Att object can be any class of object. Therefore, a Group is a container for one or more business objects. Each business object is represented as an Element object and each Element object contains one or more name/value pairs represented as Att objects.