How to indicate “exactly equals” occurrence constraint in XSD?

Question

I found out that it is possible to restrict the minimum and the maximum number of elements in a XML Schema.

<xs:element name="person">
  <xs:complexType>
    <xs:sequence>
      <xs:element name="full_name" type="xs:string"/>
      <xs:element name="child_name" type="xs:string"
      maxOccurs="10" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

I want to restrinct the number of elements to an exact number. Is there a numberOfOccurs , or something like that? I could make it by setting the minOccurs to a value that is equal to maxOccurs... for example..

<xs:element name="person">
  <xs:complexType>
    <xs:sequence>
      <xs:element name="full_name" type="xs:string"/>
      <xs:element name="child_name" type="xs:string"
      maxOccurs="10" minOccurs="10"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

Is there a specific way for doing it?

Answer 1

没有单独的基数约束，例如exactlyOccurs -仅使用将minOccurs和maxOccurs设置为与您期望的值相同的值即可。