Native XML Document Fragmentation Model

As XML document is distributed across the web, it can be considered like a distributed repository of XML documents and is subjected to distribution design. However, there is no adequate works on XML document distribution design. To address the shortcomings in XML document fragmentation design, in this work, we have focused on the vertical fragmentation design of the XML documents. Two fragmentation models have been proposed: query based fragmentation and structure-and size-based fragmentation. For the query based fragmentation model, vertical fragmentation techniques are proposed using the bond energy algorithm and graphical based algorithm. We have implemented both algorithms and evaluated their performance. The performance of our fragmentation algorithms are compared with centralized and fully replicated XML documents, where better results are obtained. The Structure- and size-based Fragmentation model and its implementation algorithms are also evaluated and encouraging results are achieved.