Gn-Dtd: Innovative Way for Normalizing XML Document

Abstract

As XML becomes widely used, dealing with redundancies in XML data has become an increasingly important issue. Redundantly stored information can lead not just to a higher data storage cost, but also to increased costs for data transfer and data manipulation, such data redundancies can lead to potential update anomalies. One way to avoid data redundancies is to employ good schema design based on known functional dependencies. This paper presents a graphical approach to model XML documents based on a Data Type Documentation called Graphical  Notations-Data  Type   Documentation  (GN-DTD). GN-DTD allows us to  capture syntax and semantic of XML documents   in   a   simple   way   but   precise.  Using   various notations,  the important features of XML documents such as elements,   attributes,   relationship,   hierarchical    structure, cardinality,  sequence  and  disjunction  between  elements  or attribute are visualize clearly at the schema level.

Keywords- XML Model, GN-DTD design, Normalization XML schema, Transformation Rules