<?xml version="1.0"?>
<!DOCTYPE studentdetails
[<!ELEMENT studentdetails (student)+>
<!ELEMENT student (rollno,name,emailid*,phone+)>
<!ELEMENT rollno (#PCDATA)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT emailid (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ATTLIST student dname CDATA #REQUIRED>
]>
<studentdetails>
<student dname="cse">
<rollno>1</rollno>
<name>abc</name>
<emailid>aad</emailid>
<phone>123</phone>
</student>
<student dname="cse">
<rollno>1</rollno>
<name>abc</name>
<emailid>aad</emailid>
<phone>123</phone>
</student>
</studentdetails>