? XSD String in XML Schema

In XSD, the xs:string type is used to define elements or attributes that contain textual data.

? Basic Usage of xs:string

<xs:element name="firstName" type="xs:string"/>

This means the firstName element can contain any sequence of characters.

? Example: String Element in XSD

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">  <xs:element name="person">    <xs:complexType>      <xs:sequence>        <xs:element name="firstName" type="xs:string"/>        <xs:element name="lastName" type="xs:string"/>      </xs:sequence>    </xs:complexType>  </xs:element></xs:schema>

? Corresponding XML Document

<person>  <firstName>John</firstName>  <lastName>Doe</lastName></person>

? Restricting Strings with XSD

You can restrict string content with:

• minLength and maxLength

• pattern (regular expressions)

• enumeration (allowed fixed values)

Example: Restricting a String

<xs:simpleType name="CodeType">  <xs:restriction base="xs:string">    <xs:minLength value="3"/>    <xs:maxLength value="10"/>    <xs:pattern value="[A-Z0-9]+"/>  </xs:restriction></xs:simpleType><xs:element name="code" type="CodeType"/>

This allows uppercase letters and digits only, between 3 and 10 characters.

Would you like me to generate a complete example combining these restrictions?