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![]() | ![]() | ![]() | Altova Mailing List Archives>Archive Index >xmlschema-dev Archive Home >Recent entries >Thread Prev - optional, but at least one required >Thread Next - Restrictions on other values RE: optional, but at least one requiredTo: <bkbonner@-----.--->, <xmlschema-dev@--.---> Date: 1/5/2006 9:46:00 AM You need to specify the requirements in a little more detail: * are multiple occurrences of a, b, and c allowed? * what constraints do you want to impose on the ordering of the elements? Michael Kay http://www.saxonica.com/ > -----Original Message----- > From: xmlschema-dev-request@w... > [mailto:xmlschema-dev-request@w...] On Behalf Of Brian Bonner > Sent: 04 January 2006 19:22 > To: xmlschema-dev@w... > Subject: optional, but at least one required > > > Hello, > > Is there a way through restrictions or xmlschema in general to create > the following criteria? > > <options> > <a></a> > <b></b> > <c></c> > </options> > > where the rule is that a, b and c are all optional, but at least one > of a, b or c is required. > > Thanks. > > Brian > > > From bob@n... Thu Jan 05 14:02:08 2006 Received: from maggie.w3.org ([ | ![]() | ![]() | ![]() |
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