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— Tamino XML Schema Reference Guide —

xs:restriction

Purpose	This element allows restrictions to be imposed on the datatype specified by the `base` attribute. You can choose between twelve constraining facets, which are listed below in the child elements section of this table.
Parent element	`xs:complexContent`, `xs:simpleType`
Child elements	`xs:enumeration`, `xs:fractionDigits`, `xs:length`, `xs:maxExclusive`, `xs:maxInclusive`, `xs:maxLength`, `xs:minExclusive`, `xs:minInclusive`, `xs:minLength`, `xs:pattern`, `xs:totalDigits`, `xs:whiteSpace`. These child elements represent the constraining facets that can be applied to restrict the value space of the new data type to be defined.
Attributes	`base`

Attributes

Name	Type	Description
`base`	`xs:QName`	When you use the `xs:restriction` element to derive a new simple type from an existing simple type (the base type), the `base` attribute specifies the type from which the derived type is derived. See the example below in which a new type is derived from `xs:NMTOKEN` by restriction.

Example 1

This example shows a type definition of an enumeration type whose lexical space contains the three values given as value arguments for the xs:enumeration element:

<xs:restriction base = "xs:NMTOKEN">
  <xs:enumeration value = "instrumentalist"/>
  <xs:enumeration value = "jazzSinger"/>
  <xs:enumeration value = "jazzComposer"/>
</xs:restriction>

Example 2

This example defines a datatype for a financial application for expressing numerical values for monetary amounts ranging from -999,999,999.99 Euros to 999,999,999.99 Euros:

<xs:simpleType name="amount">
  <xs:restriction base="xs:decimal">
    <xs:totalDigits value="11"/>
    <xs:fractionDigits value="2"/>
  </xs:restriction>
</xs:simpleType>

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