- From: Jeni Tennison <jeni@jenitennison.com>
- Date: Mon, 21 Jan 2002 11:44:49 +0000
- To: Oleg Tkachenko <olegt@multiconn.com>
- CC: xmlschema-dev@w3.org
Hi Oleg, > How can I restrict the following type to be "to" value >= "from" > value? > > <xs:complexType name="unboundedRangeType"> > <xs:all> > <xs:element name="from" type="xs:unsignedLong" /> > <xs:element name="to" type="xs:unsignedLong" /> > </xs:all> > </xs:complexType> This is an example of a "co-occurrence constraint". XML Schema cannot articulate most co-occurrence constraints, including this one, so you have to use another schema language instead. For this particular co-occurrence constraint, you'd be best off with a language such as Schematron or Examplotron that uses XPath to articulate low-level rules. Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/
Received on Monday, 21 January 2002 06:44:52 UTC