gml:CompositeValue is an aggregate value built from other values . It containszero or an arbitrary number of gml:valueComponent elements, and zero or onegml:valueComponents property elements. It may be used for strongly coupled aggregates(vectors, tensors) or for arbitrary collections of values.
Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
Source
<element name="CompositeValue" type="gml:CompositeValueType" substitutionGroup="gml:AbstractValue"><annotation><documentation>gml:CompositeValue is an aggregate value built from other values . It contains zero or an arbitrary number of gml:valueComponent elements, and zero or one gml:valueComponents property elements. It may be used for strongly coupled aggregates (vectors, tensors) or for arbitrary collections of values.</documentation></annotation></element>