3. Giving Some Depth To Our First Schema (samples)

Sample 1

	

  <xs:element name="library">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="book" maxOccurs="unbounded"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>

Sample 2

 

  <xs:element name="library">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="book" maxOccurs="unbounded">
          <xs:complexType>
            <xs:sequence>
              <xs:element ref="isbn"/>
              <xs:element ref="title"/> 
              <xs:element ref="author" minOccurs="0"
                maxOccurs="unbounded"/> 
              <xs:element ref="character" minOccurs="0"
                maxOccurs="unbounded"/>
            </xs:sequence>
            <xs:attribute ref="id"/>
            <xs:attribute ref="available"/>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>

Sample 3

[download]


<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="library">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="book" maxOccurs="unbounded">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="isbn" type="xs:integer"/>
              <xs:element name="title">
                <xs:complexType>
                 <xs:simpleContent>
                 <xs:extension base="xs:string">
                 <xs:attribute name="lang" type="xs:language"/>
                 </xs:extension>
                 </xs:simpleContent>
                </xs:complexType>
              </xs:element> 
              <xs:element name="author" minOccurs="0"
                maxOccurs="unbounded">
                <xs:complexType>
                 <xs:sequence>
                 <xs:element name="name" type="xs:string"/>
                 <xs:element name="born" type="xs:date"/>
                 <xs:element name="dead" type="xs:date"/>
                 </xs:sequence>
                 <xs:attribute name="id" type="xs:ID"/>
                </xs:complexType>
              </xs:element> 
              <xs:element name="character" minOccurs="0"
                maxOccurs="unbounded">
                <xs:complexType>
                 <xs:sequence>
                 <xs:element name="name" type="xs:string"/>
                 <xs:element name="born" type="xs:date"/>
                 <xs:element name="qualification" type="xs:string"/>
                 </xs:sequence>
                 <xs:attribute name="id" type="xs:ID"/>
                </xs:complexType>
              </xs:element>
            </xs:sequence>
            <xs:attribute name="id" type="xs:ID"/>
            <xs:attribute name="available" type="xs:boolean"/>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

Sample 4

[download]


<?xml version="1.0"?>
<library>
  <book id="b0836217462" available="true">
    <isbn>
      0836217462
    </isbn>
    <title lang="en">
      Being a Dog Is a Full-Time Job
    </title>
    <author id="CMS">
      <name>
        <first>
          Charles
        </first>
        <middle>
          M.
        </middle>
        <last>
          Schulz
        </last>
      </name>
      <born>
        1922-11-26
      </born>
      <dead>
        2000-02-12
      </dead>
    </author>
    <character id="Snoopy">
      <name>
        Snoopy
      </name>
      <born>
        1950-10-04
      </born>
      <qualification>
        extroverted beagle
      </qualification>
    </character>
  </book>
</library>