Faq.xsd

<?xml version="1.0" encoding="UTF-8" ?>

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:element name="entry">
    <xs:complexType>
      <xs:sequence>
          <!-- TODO: Make this into a choice between xrefs and q and a. Currently it allows q/a to be missed -->
        <xs:element name="question" minOccurs="0" maxOccurs="1" type="xs:string"/> 
        <xs:element name="answer" minOccurs="0" maxOccurs="1">
          <xs:complexType mixed="true">
            <xs:sequence>
              <xs:any minOccurs="0" maxOccurs="unbounded" processContents="skip"/>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
      <!-- TODO: Is it id/tags OR id/xref? -->
      <xs:attribute name="id" type="xs:string" use="required"/>
      <xs:attribute name="xref" type="xs:string" use="optional"/>
      <xs:attribute name="tags" type="xs:string" use="optional"/>
      <xs:attribute name="mode" type="xs:string" use="optional"/>
    </xs:complexType>
  </xs:element>

  <xs:element name="target">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="1" maxOccurs="unbounded" ref="entry"/>
      </xs:sequence>
      <xs:attribute name="name" type="xs:string" use="required"/>
    </xs:complexType>
  </xs:element>

  <xs:element name="faq">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="1" maxOccurs="unbounded" ref="target"/>
      </xs:sequence>
      <xs:attribute name="name" type="xs:string" use="required"/>
      <xs:attribute name="source" type="xs:string" use="optional"/>
      <!-- TODO: is there a URL type? -->
      <xs:attribute name="source_url" type="xs:string" use="required"/>
      <xs:attribute name="sourced_at" type="xs:string" use="optional"/>
      <xs:attribute name="published_date" type="xs:string" use="optional"/>
    </xs:complexType>
  </xs:element>

</xs:schema>