<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema version="5.0" 
            xmlns:nwis="http://water.usgs.gov/XML/NWIS/5.0"
            
            xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            
            elementFormDefault="qualified">

	<xsd:include schemaLocation="DataAgingPeriod.xsd"/>
	<xsd:include schemaLocation="DataAgingHistory.xsd"/>

	<xsd:element name="DataAging">
		<xsd:annotation>
			<xsd:documentation>
				<Definition>The collection of the data descriptor's data aging periods and history of changes.</Definition>
			</xsd:documentation>
		</xsd:annotation>
		<xsd:complexType>
			<xsd:sequence>
                                <xsd:element ref="DataAgingPeriod" maxOccurs="unbounded"/>
                                <xsd:element ref="DataAgingHistory"  minOccurs="0" maxOccurs="unbounded"/>
			</xsd:sequence>
		</xsd:complexType>
	</xsd:element>
</xsd:schema>
