XML入门2

<?xml version = "1.0" encoding="GB2312"?>
<!DOCTYPE studentinfomation[
 <!ELEMENT studentinfomation (student)>
 <!ATTLIST student id CDATA "200800">
 <!ELEMENT student (name,age,sex,tel)>
  <!ELEMENT name (#PCDATA)>
  <!ELEMENT age (#PCDATA)>
  <!ELEMENT sex (#PCDATA)>
  <!ELEMENT tel (#PCDATA)>
]>
<studentinfomation>
 <student id="200801">
  <name>成龙</name>
  <age>20</age>
  <sex>男</sex>
  <tel>12345678</tel>
 </student>
 <student id="200802">
  <name>刘德华</name>
  <age>22</age>
  <sex>男</sex>
  <tel>98765432</tel>
 </student>
</studentinfomation>