XML/XML Schema/Russian Doll

Russian Doll Design with attributes

   <source lang="xml">

File: Data.xml

<?xml version="1.0"?> <Books xmlns="http://www.wbex.ru"

          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.wbex.ru Schema.xsd">
       <Book Category = "autobiography" InStock = "true" Reviewer = "R1">
               <Title>title 1</Title>
               <Author>author 1</Author>
               <Date>2008</Date>
               <ISBN>1-11111-111-1</ISBN>
               <Publisher>Publisher 1</Publisher>
       </Book>
       <Book Category = "fiction" InStock = "false" Reviewer = "R2">
               <Title>title 2</Title>
               <Author>author 2</Author>
               <Date>2007</Date>
               <ISBN>0-111-11111-1</ISBN>
               <Publisher>Publisher 2</Publisher>
       </Book>
       <Book Category = "non-fiction" Reviewer = "R3">
               <Title>title 3</Title>
               <Author>author 3</Author>
               <Date>2004</Date>
               <ISBN>0-11-111111-1</ISBN>
               <Publisher>Publisher 3</Publisher>
       </Book>

</Books>

File: Schema.xsd <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"

           targetNamespace="http://www.wbex.ru"
           xmlns="http://www.wbex.ru"
           elementFormDefault="qualified">
   <xsd:element name="Books">
       <xsd:complexType>
           <xsd:sequence>
               <xsd:element name="Book" maxOccurs="unbounded">
                   <xsd:complexType>
                       <xsd:sequence>
                           <xsd:element name="Title" type="xsd:string"/>
                           <xsd:element name="Author" type="xsd:string" maxOccurs="unbounded"/>
                           <xsd:element name="Date" type="xsd:string"/>
                           <xsd:element name="ISBN" type="xsd:string"/>
                           <xsd:element name="Publisher" type="xsd:string"/>
                       </xsd:sequence>
                       <xsd:attribute name="Category" use="required">
                           <xsd:simpleType>
                               <xsd:restriction base="xsd:string">
                                   <xsd:enumeration value="autobiography"/>
                                   <xsd:enumeration value="non-fiction"/>
                                   <xsd:enumeration value="fiction"/>
                               </xsd:restriction>
                           </xsd:simpleType>
                       </xsd:attribute> 
                       <xsd:attribute name="InStock" type="xsd:boolean" default="false"/>
                       <xsd:attribute name="Reviewer" type="xsd:string" default="none"/>
                   </xsd:complexType>
               </xsd:element>
           </xsd:sequence>
       </xsd:complexType>
   </xsd:element>

</xsd:schema>

</source>
   
  

Russian Doll style

   <source lang="xml">

File: Data.xml <?xml version="1.0"?> <Books xmlns="http://www.wbex.ru"

          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.wbex.ru Schema.xsd">
       <Book>
               <Title>title 1</Title>
               <Author>author 1</Author>
               <Date>2008</Date>
               <ISBN>1-11111-111-1</ISBN>
               <Publisher>Publisher 1</Publisher>
       </Book>
       <Book>
               <Title>title 2</Title>
               <Author>author 2</Author>
               <Date>2007</Date>
               <ISBN>0-111-11111-1</ISBN>
               <Publisher>Publisher 2</Publisher>
       </Book>

</Books> File: Schema.xsd <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"

           targetNamespace="http://www.wbex.ru"
           xmlns="http://www.wbex.ru"
           elementFormDefault="qualified">
   <xsd:element name="Books">
       <xsd:complexType>
           <xsd:sequence>
               <xsd:element name="Book" maxOccurs="unbounded">
                   <xsd:complexType>
                       <xsd:sequence>
                           <xsd:element name="Title" type="xsd:string"/>
                           <xsd:element name="Author" type="xsd:string"/>
                           <xsd:element name="Date" type="xsd:string"/>
                           <xsd:element name="ISBN" type="xsd:string"/>
                           <xsd:element name="Publisher" type="xsd:string"/>
                       </xsd:sequence>
                   </xsd:complexType>
               </xsd:element>
           </xsd:sequence>
       </xsd:complexType>
   </xsd:element>

</xsd:schema>

</source>
   
  

With the Russian Doll Design, the schema mirrors the structure of the instance document

   <source lang="xml">

File: Data.xml <?xml version = "1.0" ?> <Customer xmlns = "http://www.wbex.ru/Customers"

         customerID = "2442"
         clubCardMember = "true" >
  <FirstName>first</FirstName>
  <MiddleInitial>middle</MiddleInitial>
  <LastName>last</LastName>

</Customer> File: Schema.xsd <?xml version = "1.0" ?> <schema xmlns = "http://www.w3.org/2001/XMLSchema"

       targetNamespace = "http://www.wbex.ru/Customers"
       xmlns:cust = "http://www.wbex.ru/Customers"
       elementFormDefault = "qualified"
       attributeFormDefault = "unqualified">
  
  <element name = "Customer">
     <complexType>
        <sequence>
            <element name = "FirstName" type = "string" />
            <element name = "MiddleInitial" type = "string" minOccurs = "0" maxOccurs = "1" />
            <element name = "LastName" type = "string" />
        </sequence>
        <attribute name = "customerID" use = "required" type = "integer" />
        <attribute name = "clubCardMember" type = "boolean" />
     </complexType>
  </element>
  

</schema>

</source>