XSD Ordering with possible multiple child element

Question

I'm trying to create an XDS for an XML to describe a family. Basically a Mum/Dad being optional and comming in any order, and 0-* children. In this instance you can have the following

<family>
      <DadsName>Fred</DadsName>
      <MumsName>Wilma</MumsName>
        <child>
           <childName>pebbles</childName>
        </child>
        <child>
           <childName>BamBam</childName>
        </child>
</family>

In this msg the mum/dad names can come in any order, and some times they are optional -> This is important

I've created the following XSD..

<xs:element name="family">
        <xs:complexType>
            <xs:all>
                <xs:element name="DadsName" type="xs:string" minOccurs="0" maxOccurs="1"/>
                <xs:element name="MumsName" type="xs:string" minOccurs="0" maxOccurs="1"/>
                <xs:element name="child"  maxOccurs="unbounded" >
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="childName" type="xs:string"/>
                            <xs:element name="childAge" type="xs:string"/>
                        </xs:sequence>
                    </xs:complexType>
                </xs:element>
            </xs:all>
        </xs:complexType>
</xs:element>

I specifically added the <xs:all> as the ordering of Mum and Dad can be jumbled, and the elements are optional as well.

Is this correct? I get the error 'The maxOccurs attribute is invalid. The value unBounded is invalid according to its datatype Union'

Answer 1

It looks like you are using an XSD 1.0 processor: what you have written is valid in XSD 1.1. You either need to find an XSD 1.1 processor, or change your aspirations: what you are trying to do can't be defined in 1.0.