- From: <mhuffman@ca.ibm.com>
- Date: Mon, 5 Mar 2001 11:02:03 -0500
- To: www-xml-schema-comments@w3.org
The XML Schema Structures spec has a constraint on <element>s whose parent
is not <schema> which reads:
If ref is present, then all of <complexType>, <simpleType>, <key>, <keyref>, <unique>,
nullable(nillable), default, fixed, block and type must be absent, i.e. only minOccurs,
maxOccurs, id are allowed in addition to ref, along with <annotation>.
This is in "Schema Representation Constraint: Element Declaration
Representation OK" (CR spec section 4.3.2 ... Current (Feb 10/2001) spec
section 3.3.3). This constraint omits the 4 other attributes of <element>
- abstract, final, form, and substitutionGroup.
My assumption is that these 4 attributes also "must be absent" if ref is
present, otherwise the schema would be in error.
Can someone please confirm this or correct my assumption? Thanks.
------
Mark Huffman
XML Parsers, Toronto Lab
(416) 448-2332 T/L 778
Received on Monday, 5 March 2001 11:02:14 UTC