Sample Application (XML Schema)

A.4. Sample Application

In the remainder of this appendix, we use the following simple library application, adapted from our first example in Chapter 1, "Schema Uses and Development" to illustrate the use of the various schema languages:

<library>
  <book id="-0836217462">
    <isbn>
      0836217462
    </isbn>
    <title>
      Being a Dog Is a Full-Time Job
    </title>
    <author-ref id="Charles-M.-Schulz"/>
    <character-ref id="Peppermint-Patty"/>
    <character-ref id="Snoopy"/>
    <character-ref id="Schroeder"/>
    <character-ref id="Lucy"/>
  </book>
  <book id="-0805033106">
    <isbn>
      0805033106
    </isbn>
    <title>
      Peanuts Every Sunday
    </title>
    <author-ref id="Charles-M.-Schulz"/>
    <character-ref id="Sally-Brown"/>
    <character-ref id="Snoopy"/>
    <character-ref id="Linus"/>
    <character-ref id="Snoopy"/>
  </book>
  <author id="Charles-M.-Schulz">
    <name>
      Charles M. Schulz
    </name>
    <nickName>
      SPARKY
    </nickName>
    <born>
      November 26, 1922
    </born>
    <dead>
      February 12, 2000
    </dead>
  </author>
  <character id="Peppermint-Patty">
    <name>
      Peppermint Patty
    </name>
    <since>
      Aug. 22, 1966
    </since>
    <qualification>
      bold, brash and tomboyish
    </qualification>
  </character>
  <character id="Snoopy">
    <name>
      Snoopy
    </name>
    <since>
      October 4, 1950
    </since>
    <qualification>
      extroverted beagle
    </qualification>
  </character>
  <character id="Schroeder">
    <name>
      Schroeder
    </name>
    <since>
      May 30, 1951
    </since>
    <qualification>
      brought classical music to the Peanuts strip
    </qualification>
  </character>
  <character id="Lucy">
    <name>
      Lucy
    </name>
    <since>
      March 3, 1952
    </since>
    <qualification>
      bossy, crabby and selfish
    </qualification>
  </character>
  <character id="Sally-Brown">
    <name>
      Sally Brown
    </name>
    <since>
      Aug, 22, 1960
    </since>
    <qualification>
      always looks for the easy way out
    </qualification>
  </character>
  <character id="Linus">
    <name>
      Linus
    </name>
    <since>
      Sept. 19, 1952
    </since>
    <qualification>
      the intellectual of the gang
    </qualification>
  </character>
</library>


A.3. A Short History of XML Schema Languages		A.5. XML DTDs