YourBookstore.com

This DTD describes the data which Amazon.com has agreed to make available to YourBookstore.com.

<!-- Book details -->
<!ELEMENT details     (ISBN #REQUIRED, length?, type*, description?, related*)>

<!-- ISBN number, required -->
<!ELEMENT ISBN        (%plaintext;)+>
<!-- Length of book, in pages -->
<!ELEMENT length      (#PCDATA)>
<!-- Type of book, e.g. novel, coffeetable, mystery, childrens, etc -->
<!ELEMENT type        ("fiction"|"coffeetable"|"mystery"|"childrens"|"picture"|"nonfiction"|"reference")>
<!-- Short description of the book -->
<!ELEMENT description (#PCDATA)>
<!-- Related books titles -->
<!ELEMENT related     (#PCDATA)>

<!-- Customer profile information -->
<!ELEMENT profile     (ISBN #REQUIRED, popularity?, marketshare?, agegroup?)>

<!-- Number of buyers -->
<!ELEMENT popularity  (#PCDATA)>
<!-- Percentage of sales amongst related books -->
<!ELEMENT marketshare (#PCDATA)>
<!-- Mean age of buyers -->
<!ELEMENT agegroup (#PCDATA)>

Here is some example data

<details>
 <ISBN>
  0836823796
 </ISBN>
 <length>
  15
 </length>
 <type>
  childrens
 </type>
 <type>
  picture
 </type>
 <description>
  Simple text and photographs present various baby animals, including
  a chick, piglet, and kitten.
 </description>
 <related>
  Daisy-Land Pictures and Stories for Our Pets
 </related>
</details>

<profile>
 <ISBN>
  0836823796
 </ISBN>
 <popularity>
  12
 </popularity>
 <marketshare>
  2
 </marketshare>
 <agegroup>
  1-12
 </agegroup>
</profile>

<details>
 <ISBN>
  0385319037
 </ISBN>
 <length>
  304
 </length>
 <type>
  fiction
 </type>
 <description>
  Laura Zigman's literary skirmish in the ongoing battle of the sexes
  is based on a singularly unoriginal observation: the tendency of
  human males to love 'em and leave 'em, uh, apes the behavior of
  nearly every other male animal on Earth.
 </description>
 <related>
  Dating Big Bird
 </related>
 <related>
  Mail
 </related>
</details>

<profile>
 <ISBN>
  0385319037
 </ISBN>
 <popularity>
  15,203
 </popularity>
 <marketshare>
  20.5
 </marketshare>
 <agegroup>
  24-25
 </agegroup>
</profile>

<details>
 <ISBN>
  1879206080
 </ISBN>
 <length>
  80
 </length>
 <type>
  nonfiction
 </type>
 <type>
  reference
 </type>
 <description>
From the moment of the kill to putting venison on your
table--information you can use for in-the-field dressing, at-home
butchering and properly cooking venison. 3 1/2 x 5-inch, 80-page fully
illustrated book comes with fluorescent orange cover to use in the
field where you need it.
 </description>
 <related>
Basic Butchering of Livestock & Game
 </related>
 <related>
Aggressive Whitetail Hunting
 </related>
 <related>
301 Venison Recipes : The Ultimate Deer Hunter's Cookbook
 </related>
</details>

<profile>
 <ISBN>
  1879206080
 </ISBN>
 <popularity>
  28,738
 </popularity>
 <marketshare>
  35
 </marketshare>
 <agegroup>
  18-69
 </agegroup>
</profile>