[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Creating flexible & extensible schemas (for a university E
> One question I'm struggling with is whether to make most of > the elements optional. There doesn't have to be one schema. It can be a bit tricky to manage multiple schemas for the same namespace (because there are parts of the spec that seem to assume that by specifying the namespace, you have identified the schema), but it's definitely part of the design thinking that the validation rules you want to impose might be stricter in some circumstances, weaker in others. The right solution here might be a meta-schema that can be transformed (using a set of input parameters) into the target schema you actually use for validation. For example, this allows the list of enumeration values to be varied. Michael Kay http://www.saxonica.com/
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