This might also help:
<xsd:complexType name="timeframeType">
<xsd:choice>
<xsd:group ref="both"/>
<xsd:group ref="oneorother"/>
</xsd:choice>
</xs:complexType>
<xsd:group name="both">
<xsd:sequence>
<xsd:element ref="earliestdate"/>
<xsd:element ref="latestdate"/>
</xsd:sequence>
</xsd:group>
<xsd:group name="oneorother">
<xsd:choice>
<xsd:element ref="earliestdate"/>
<xsd:element ref="latestdate"/>
</xsd:choice>
</xsd:group>
thanks,
-ranjeet
-----Original Message-----
From: Dave Yancey [mailto:]
Sent: Friday, August 16, 2002 11:38 AM
To:
Cc:
Subject: RE: [xml-dev] XML-Schema Help
>Here's one way to do it.
>
><xsd:schema targetNamespace="foo" xmlns="foo"
>xmlns:xsd="http://www.w3.org/2001/XMLSchema">
>
> <xsd:element name="A"/>
> <xsd:element name="B"/>
>
>
> <xsd:complexType name="set">
> <xsd:choice>
> <xsd:sequence>
> <xsd:element ref="A"/>
> <xsd:element ref="B" minOccurs="0"/>
> </xsd:sequence>
> <xsd:element ref="B"/>
> </xsd:choice>
> </xsd:complexType>
></xsd:schema>
Thank you. That is just what I was looking for. Based on that then the
following should work correct?
<xs:complexType name="timeframeType">
<xs:choice>
<xs:sequence>
<xs:element ref="description"/>
<xs:element ref="earliestdate" />
<xs:element ref="latestdate" minOccurs="0"/>
</xs:sequence>
<xs:sequence>
<xs:element ref="description"/>
<xs:element ref="earliestdate" minOccurs="0" />
<xs:element ref="latestdate" />
</xs:sequence>
<xs:element ref="earliestdate" />
<xs:element ref="latestdate" />
</xs:choice>
</xs:complexType>
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