XSD Schema(XML Schema Definition)

XSD 관련해서 w3cschool의 튜토리얼을 보면서 학습하고 있다.

그중 complex elements 파트이다. 

You can also base a complex element on an existing complex element and add some elements, like this.

<xs:element name = “employee” type = “fullpersoninfo”/>
 
 
 
<xs:complexType name = “personinfo”>
 
<xs:sequence>
 
    <xs:element name = “firstname” type = “xs:string”/>
 
<xs:element name = “lastname” type = “xs:string”/>
 
</xs:sequence>
 
</xs:complexType>
 
 
 
<xs:complexType  name = “fullpersoninfo”>
 
<xs:complexContext>
 
  <xs:extension base = “personinfo”>
 
    <xs:sequence>
 
    <xs:element name = “address” type = “xs:string”/>
 
<xs:element name = “city” type = “xs:string”/>
 
<xs:element name = “country” type = “xs:string”/>
 
<xs:sequence>
 
  </xs:extension>
 
</xs:complexContext>
 
</xs:complexType>

XSD Elements Only
 
It contains an element that contains only other elements
 
XSD Text-Only Elements
 
A complex text-only element can contain text and attributes
 
You must define an extension OR a restriction within the simpleContent element
 
<xs:element name = “shoesize” type = “shoetype”/>
 
 
 
<xs:complexType name = “shoetype”>
 
<xs:simpleContent>
 
  <xs:extension base = “xs:integer”>
 
    <xs:attribute name = “country” type = “xs:string”/>
 
  </xs:extension>
 
</xs:simpleContent>
 
</xs:complexType>

XSD Mixed Content
 
A mixed complex type element can contain attributes, elements, and text
 
An XML element, “letter”, that contains both text and other elements
 
<letter>
 
Dear Mr.<name>Sam Kim</name>.
 
Your order <orderid>1234</orderid>
 
will be shipped on <shipdate>2017-01-10</shipdate>.
 
</letter>
 
 
 
<xs:element name = “letter”>
 
<xs:complexType mixed = “true”>
 
  <xs:sequence>
 
    <xs:element name = “name” type = ”xs:string”>
 
<xs:element name = “orderid” type = ”xs:positiveInteger”>
 
<xs:element name = “shipdate” type = ”xs:date”>
 
  </xs:sequence>
 
</xs:complexType>
 
</xs:element>
 
 
 
-- mixed attribute must be set to ‘true’  //  <xs:sequence> tag means that the elements defined (name, orderid, shipdate) must appear in that order inside a ‘letter’ element
 
 
 
<xs:element name = “letter” type = “lettertype”/>
 
 
 
<xs:complexType name = “lettertype” mixed = ”true”>
 
<xs:sequence>
 
  <xs:element name = “name” type = “xs:string”/>
 
<xs:element name = “name” type = “xs:string”/>
 
<xs:element name = “name” type = “xs:string”/>
 
</xs:sequence>
 
</xs:complexType>