A mixed complex type element can contain attributes, elements, and text.
XSD混合内容的复合类型元素可以包含属性、元素和文本。

Complex Types with Mixed Content
混合内容的复合类型

An XML element, "letter", that contains both text and other elements:
一个XML元素，"letter"既可以包含文本又可以包含其它元素：

<letter>
Dear Mr.<name>John Smith</name>.
Your order <orderid>1032</orderid>
will be shipped on <shipdate>2001-07-13</shipdate>.

</letter>

The following schema declares the "letter" element:
下面的XML Schema声明了"letter"元素：

<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>

Note: To enable character data to appear between the child-elements of "letter", the mixed attribute must be set to "true". The <xs:sequence> tag means that the elements defined (name, orderid and shipdate) must appear in that order inside a "letter" element.
注意：为了使字符数据能出现在"letter"子元素之间，mixed 属性必须设置为"true"。<xs:sequence>标签指定了已定义的元素（name、orderid 和 shipdate）在"letter"元素中必须以指定的顺序出现。

We could also give the complexType element a name, and let the "letter" element have a type attribute that refers to the name of the complexType (if you use this method, several elements can refer to the same complex type):
我们可以为这个complexType元素定义一个名称，并且让"letter"元素包含一个引用了complexType名称的类型属性（如果你使用了上述方法，几个元素可以同时引用相同的复合类型）：

<xs:element name="letter" type="lettertype"/>

<xs:complexType name="lettertype" 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>

XSD 复合纯文本 XSD 指示器复合类型

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