<xs:element name="index" maxOccurs="1" minOccurs="0">
<xs:complexType>
<xs:sequence>
<xs:element name="atomic" type="xs:boolean" maxOccurs="1" minOccurs="0" />
<xs:element name="stored" type="xs:boolean" maxOccurs="1" minOccurs="0" />
<xs:element name="compressed" type="xs:boolean" maxOccurs="1" minOccurs="0" />