<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified"
  targetNamespace="http://www.impex.org/2012/configuration.xsd"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:imp="http://www.impex.org/2012/configuration.xsd">
  <xs:element name="impexconfiguration">
    <xs:complexType>
      <xs:choice maxOccurs="unbounded" minOccurs="0">
        <xs:element name="database">
          <xs:complexType>
            <xs:sequence>
              <xs:element type="xs:string" name="name" minOccurs="1" maxOccurs="1"/>
              <xs:element type="xs:string" name="description" minOccurs="0" maxOccurs="1"/>
              <xs:choice maxOccurs="2" minOccurs="1">
                <xs:element type="xs:string" name="ip" maxOccurs="1"/>
                <xs:element type="xs:string" name="dns" maxOccurs="1"/>
              </xs:choice>
              <xs:element type="xs:string" name="methods" minOccurs="1" maxOccurs="unbounded"/>
              <xs:element type="xs:string" name="tree" minOccurs="1" maxOccurs="unbounded"/>
              <xs:element type="xs:string" name="protocol" maxOccurs="unbounded" minOccurs="1"/>
              <xs:element type="xs:string" name="info" maxOccurs="1" minOccurs="1"/>
            </xs:sequence>
            <xs:attribute name="type" use="required" type="imp:databasetype"/>
            <xs:attribute name="id" use="required" type="xs:anyURI"/>
            <xs:attribute name="portal" use="required" type="xs:boolean"/>
          </xs:complexType>
        </xs:element>
        <xs:element name="tool">
          <xs:complexType>
            <xs:sequence>
              <xs:element type="xs:string" name="name" minOccurs="1" maxOccurs="1"/>
              <xs:element type="xs:string" name="description" minOccurs="0" maxOccurs="1"/>
              <xs:element type="xs:string" name="url" maxOccurs="1" minOccurs="1"></xs:element>
              <xs:element type="xs:string" name="info" maxOccurs="1" minOccurs="1"/>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>

  <xs:simpleType name="databasetype">
    <xs:restriction base="xs:string">
      <xs:enumeration value="simulation"/>
      <xs:enumeration value="observation"/>
    </xs:restriction>
  </xs:simpleType>

</xs:schema>