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At 04:24 AM 10/22/2005, Michael Kay wrote: > > > > Basically, I would like to develop schemas that impose > > constraints on an element or attribute in one XML file based on > > element or attribute values from another XML file. Is this at > > all possible? I would consider making a file containing just a > > list of all available item IDs, if that would help solve the > > problem. > >This can't be done directly: schema validation is confined to a single >document. The only thing you can do is write a transformation that >constructs a synthetic document and validate that; but then you might as >well do the validation within the stylesheet that performs the >transformation. Unfortunately (or not), I don't deal with transformations, and don't even know what that is. I just need to parse some XML data into internal data structures in my program. I can think of at least one way of doing this using Schema validation: define an enumeration type that consists of all item IDs in a separate schema, then include that schema into all the other schemas. But this seems rather awkward, so I thought there must be a better way. I should mention that the data I am dealing with is semi-permanent: it is not being modified by the software, but it may be hand-edited by end-users.
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