Declaring an Element with a Simple Type : Simple Type « XML Schema « XML Tutorial

An element has a simple type if it's only allowed to contain other elements or attributes. 
There are many different built-in simple types.
You can create your own, based on one of the built-in types.

File: Schema.xsd

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.java2s.com" 
  xmlns="http://www.java2s.com"
  elementFormDefault="qualified">

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

</xs:schema>


File: Data.xml 
<?xml version="1.0"?>
<weight>3 points</weight>

File: Schema.xsd

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.java2s.com" xmlns="http://www.java2s.com"
  elementFormDefault="qualified">

  <xs:element name="population" type="xs:integer" />
</xs:schema>


File: Data.xml

<?xml version="1.0"?>
<population>28</population>

3.53.Simple Type
	3.53.1.	Declaring an Element with a Simple Type
	3.53.2.	Simple Type Definitions
	3.53.3.	XML Schemas provide a number of built-in simple types.
	3.53.4.	User-Defined Data types
	3.53.5.	The simple type may be defined globally, as a child of an attribute declaration, or within an element content model
	3.53.6.	A ISO date without a time zone
	3.53.7.	An anonymous simple string datatype for which any one of three literal string patterns (Small, Medium, or Large) are acceptable