How to write a schema document
①russian Doll (Russian set of dolls)
②salami Slice (sausage slices)
③venetian Blind (blinds) Recommended
Second, Russian doll Russia set Eva
As the name suggests, the way to write is a layer, only a root element, through and set the way to write complete.
Advantages: Clear Structure
Disadvantage: elements cannot be reused
Russiondoll.xsd
<?xml version= "1.0" encoding= "UTF-8"?>
<schema xmlns= "Http://www.w3.org/2001/XMLSchema"
Targetnamespace= "Http://www.xy.com"
Xmlns:tns= "Http://www.xy.com"
elementformdefault= "qualified" >
<element name= "Books" >
<complexType>
<!--maxoccurs represents the maximum number of occurrences, unbounded the number of times unlimited. The default number is 1 times-->
<sequence maxoccurs= "unbounded" >
<element name= "book" >
<complexType>
<sequence minoccurs= "1" maxoccurs= "unbounded" >
<element name= "title" Type= "string"/>
<element name= "Content" type= "string"/>
<!--choice label attributes optional-->
<choice>
<element name= "Author" type= "string"/>
<element name= "Authors" >
<complexType>
<!--the elements in the All tab can appear sequentially, but the number is 1 times-->
<all>
<!--only one--> per element appears
<element name= "Author" type= "string"/>
</all>
</complexType>
</element>
</choice>
</sequence>
<!--the properties of the book, which must be--> after sequence in the schema
<attribute name= "id" type= "int" use= "required"/>
</complexType>
</element>
</sequence>
</complexType>
</element>
</schema>
Russiondoll.xml
<?xml version= "1.0" encoding= "UTF-8"?>
<book:books xmlns:book= "http://www.example.org/02"
Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"
xsi:nonamespaceschemalocation= "/02.xsd" >
<book:book id= "1" >
<book:title>java in Action</book:title>
<book:content>java is good</book:content>
<book:author>TOM</book:author>
</book:book>
<book:book id= "2" >
<book:title>soa in Action</book:title>
<book:content>soa is difficult</book:content>
<book:authors>
<book:author>LILY</book:author>
</book:authors>
</book:book>
</book:books>
second, salami slice sausage slices
Benefits: can be maximized for reuse
Disadvantage: The root element is not clear. Book, ID, title, content all of the element can be the root element
Salamislice.xsd
<?xml version= "1.0" encoding= "UTF-8"?>
<schema xmlns= "Http://www.w3.org/2001/XMLSchema"
Targetnamespace= "Http://www.xy,com"
Xmlns:tns= "Http://www.xy.com"
elementformdefault= "qualified" >
<element name= "book" type= "Tns:booktype" ></element>
<element name= "id" type= "int"/>
<element name= "title" Type= "string"/>
<element name= "Content" type= "string"/>
<complextype name= "BookType" >
<sequence>
<element ref= "Tns:id"/>
<element ref= "Tns:title"/>
<element ref= "Tns:content"/>
</sequence>
</complexType>
</schema>
third, shutters venetian blind
root element clear, element reusable
Venetianblind.xsd
<?xml version= "1.0" encoding= "UTF-8"?>
<schema xmlns= "Http://www.w3.org/2001/XMLSchema"
Targetnamespace= "Http://www.xy.com"
Xmlns:tns= "Http://www.xy.com"
elementformdefault= "qualified" >
<element name= "Person" type= "Tns:persontype"/>
<complextype name= "PersonType" >
<sequence>
<element name= "Name" type= "string"/>
<element name= "Age" type= "Tns:agetype"/>
<element name= "Email" type= "Tns:emailtype"/>
</sequence>
<attribute name= "Sex" type= "Tns:sextype"/>
</complexType>
<simpletype name= "Emailtype" >
<restriction base= "string" >
<pattern value= "(\w+\.*) *\w+@\w+\. [A-za-z] {2,6} "/>
<minlength value= "6"/>
<maxlength value= "255"/>
</restriction>
</simpleType>
<simpletype name= "Agetype" >
<restriction base= "int" >
<mininclusive value= "1"/>
<maxexclusive value= "/>"
</restriction>
</simpleType>
<simpletype name= "Sextype" >
<restriction base= "string" >
<enumeration value= "Male"/>
<enumeration value= "female"/>
</restriction>
</simpleType>
</schema>
Venetianblind.xml
<?xml version= "1.0" encoding= "UTF-8"?>
<person xmlns= "http://www.example.org/04"
Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"
xsi:schemalocation= "http://www.xy.com" sex= "male" >
<name>test</name>
<age>10</age>
<email>123456@QQ.com</email>
</person>
A complex DTD
Venetianblind2.xsd
<?xml version= "1.0" encoding= "UTF-8"?>
<schema xmlns= "Http://www.w3.org/2001/XMLSchema"
Targetnamespace= "Http://www.xy.com"
Xmlns:xy= "Http://www.xy.com"
elementformdefault= "qualified" >
<element name= "Persons" type= "Xy:personstype"/>
<complextype name= "Personstype" >
<sequence maxoccurs= "unbounded" >
<element name= "Person" type= "Xy:persontype" ></element>
</sequence>
</complexType>
<complextype name= "PersonType" >
<sequence>
<element name= "Name" type= "string"/>
<element name= "Age" type= "Xy:agetype"/>
<element name= "Email" type= "Xy:emailtype"/>
</sequence>
<attribute name= "Sex" type= "Xy:sextype" default= "male"/>
<attribute name= "id" type= "id" use= "required"/>
</complexType>
<simpletype name= "Emailtype" >
<restriction base= "string" >
<pattern value= "(\w+\.*) *\w+@\w+\. [A-za-z] {2,6} "/>
<minlength value= "6"/>
<maxlength value= "255"/>
</restriction>
</simpleType>
<simpletype name= "Agetype" >
<restriction base= "int" >
<mininclusive value= "1"/>
<maxexclusive value= "/>"
</restriction>
</simpleType>
<simpletype name= "Sextype" >
<restriction base= "string" >
<enumeration value= "Male"/>
<enumeration value= "female"/>
</restriction>
</simpleType>
</schema>
Venetianblind2.xml
<?xml version= "1.0" encoding= "UTF-8"?>
<persons xmlns= "Http://www.xy.com"
Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"
xsi:schemalocation= "Http://www.xy.com" >
<person sex= "female" id= "P1" >
<name>test</name>
<age>10</age>
<email>123456@qq.com</email>
</person>
<person sex= "Male" id= "P2" >
<name>test2</name>
<age>20</age>
<email>123456@qq.com</email>
</person>
</persons>
