Computer Engineering and Intelligent Systems www.iiste.org ISSN 2222-1719 (Paper) ISSN 2222-2863 (Online) Vol 3, No.3, 2012 29 Gn-Dtd: Innovative Way for Normalizing XML Document Ms.Jagruti Wankhade 1* Prof. Vijay Gulhane 2 1. Sipna’s college of Engg and Tech. ,S.G.B .Amravati University, Amravati (MS) India 2. Sipna’s college of Engg and Tech.,S.G.B .Amravati University, Amravati (MS) India *Jagruti_wankhade22@rediffmail.com , V_gulhane@rediffmail.com Absract- 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 1.INTRODUCTION With the wide exploitation of the web and the accessibility of a huge amount of electronic data, XML (extensible Mark-up Language) has been used as a standard means of information representation and exchange over the web. Additionally, XML is currently used for many different types of applications which can be classified into two main categories [5,6]. The first application is called document centric XML and the other is called data centric XML. The document centric XML is used as a mark-up language for semi-structured text documents with mixed-content elements and comments. The data centric XML consists of regular structure data for automated processing and there are little or no element with mixed content, comments, and processing instruction. The current XML data models however do not pay sufficient attention to the Problem of representing the structure of XML documents. We believe, in order to present more sophisticated forms of XML documents structure, the schema such as DTD or XML schema must taken into account since it is used to define and validate XML documents structure. In our work, we consider DTD, as it has been widely well accepted and expressive enough for a large variety