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XML Document Design Via GN-DTD

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Executive Summary

Designing a well-structured XML document is important for the sake of readability and maintainability. More importantly, this will avoid data redundancies and update anomalies when maintaining a large quantity of XML based documents. This paper proposes a method to improve XML structural design by adopting Graphical Notations for Document Type Definitions (GN-DTD), which is used to describe the structure of an XML document at the schema level. Multiples levels of normal forms for GN-DTD are proposed on the basis of conceptual model approaches and theories of normalization. The normalization rules are applied to transform a poorly designed XML document into a well designed based on normalized GN-DTD, which is illustrated through examples.

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