Convert SGML DTD to XML Schema

[jensen2]

Hello,

I want to convert the SGML DTD syntax "<!ELEMENT Test (#PCDATA | Element1 | Element2)+>" to XML Schema Syntax.

I tried it with this syntax but there is text not mandatory:

<xs:element name="Test">
<xs:complexType mixed="true">
<xs:choice maxOccurs="unbounded">
<xs:element ref="Element1"/>
<xs:element ref="Element2"/>
</xs:choice>
</xs:complexType>
</xs:element>

The following xml syntax should be valid:

<Test>Text</Test> or
<Test><Element1/>Text</Test> or
<Test><Element1/><Test>

But not:
<Test></Test>

How will it be written, that text has to be mandatory?

Thanks Jens.