[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: element versioning
> > Is it possible to track versions of elements in schemas? > > I've tried to add two attributes, ID (xsd:ID) and version > (xsd:positiveInteger), but then the instance won't validate > when I add two > elements with the same ID. > xsd:ID values have to be unique within a document. If you want a more elaborate constraint (combination of ID and version being unique) you can do it with an xs:unique constraint in the schema. Michael Kay
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