xml中内部引用DTD

实例如下

<?xml version="1.0" encoding="UTF-8"?>
<!-- 内部声明DTD -->
<!DOCTYPE scores[
	<!ELEMENT scores (student+)>
	<!ELEMENT student (name,course,score)>
	<!ATTLIST student id CDATA #REQUIRED>
	<!ELEMENT name (#PCDATA)>
	<!ELEMENT course (#PCDATA)>
	<!ELEMENT score (#PCDATA)>
]>

<scores>
    <student  id="1">
        <name>www</name>
        <course>java</course>
        <score>66</score>
    </student>
    <student id="2">
        <name>eee</name>
        <course>php</course>
        <score>77</score>
    </student>
</scores>