XML XSD와 DTD와 차이.

참고사이트: http://www.scitech.co.kr/upload/book_image/s_017/Xml04.pdf 

<DTD>

 <!DOCTYPE Memo [

    <!ELEMENT Memo (PInfo, MInfo)>

    <!ELEMENT PInfo (from, to)>

    <!ELEMENT MInfo (date, main)>

    <!ELEMENT form (#PCDATA)>

    <!ELEMENT to (#PCDATA)>

    <!ELEMENT date (#PCDATA)>

    <!ELEMENT main (#PCDATA)>

]>

     DTD를 이용한 XML:  REF사이트

<XML XSD> : XML Schema Definition.

<?xml version="1.0" encoding="EUC-KR"?>

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"

targetNamespace="http://www.lisia.net"

xmlns="http://www.lisia.net"

elementFormDefault="qualified">

<xsd:element name="Memo">

 <xsd:complexType>  

  <xsd:sequence>

    <xsd:element name="PInfo">

    <xsd:complexType>

     <xsd:sequence>

       <xsd:element name="from type="xsd:string"/>

       <xsd:element name="to" type="xsd:string"/>

   </xsd:sequence>

==> XSD 를 이용한  XML   

 

<?xml version="1.0" encoding="EUC-KR"?>

<Memo xmlns="http://www.lisia.net" 

              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

              xsi:schemaLocation="http://www.lisia.net ex4_3.xsd"> 

<PInfo>

     <from>김광수</from>

     <to>박수란</to>

</PInfo>