Metadata creation and editing is a reasonably well-understood task which involves creating forms, checking the input data and generating appropriate storage formats. XML has largely become the standard storage representation for metadata records and various automatic mechanisms are becoming popular for validation of these records, including XML Schema and Schematron. However, there is no standard methodology for creating data manipulation mechanisms. This work presents a set of guidelines and extensions to use the XML Schema standard for this purpose. The experiences and issues involved in building such a generalised structured data editor are discussed, to support the notion that metadata editing, and not just validation, should be description-driven.
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