例7－4.xml

web课件并附有习题练习还有实例详细的讲解了WEB的各种开发过程是学习 的好资料

<!DOCTYPE INVENTORY
[
<!ENTITY am "American">
<!ENTITY en "English">
<!ELEMENT INVENTORY (BOOK*)>
<!ELEMENT BOOK (TITLE, AUTHOR)>
<!ELEMENT TITLE (#PCDATA)>
<!ELEMENT AUTHOR (#PCDATA)>
<!ATTLIST AUTHOR Nationality CDATA "&am;">
]
>
<INVENTORY>
  <BOOK>
    <TITLE> David Copperfield </TITLE>
    <AUTHOR Nationality ="&en;"> Charles Dicckens </AUTHOR>
  </BOOK>
<!-- other elements ...-->
</INVENTORY>