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International Journal of Information Technology & Computer Science ( IJITCS )

Abstract :

XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable, the increasing availability of heterogeneous XML informative sources has raised a number of issues concerning how to represent and manage semi-structured data. Although XML sources can exhibit proper structures and contents, differently annotated XML documents may in principle encode related semantics due to subjective definitions of markup tags. Discovering ontology knowledge to infer semantic organization of XML documents has become a major challenge in XML data management. XPath query language is used for selecting nodes and compute values from XML document, tuple the XML tree and address the problem of XML data clustering according to structure with lexical ontology knowledge. SOAP is a protocol specification for exchanging structured information in the implementation of web services in computer networks, in literature it relies on HTTP for message negotiation and transmission. Experiment on real XML database gives evidence that our proposed approach is highly effective in tuples and clustering of XML database, also aims to study the effect of digital signature on the SOAP messages. So this paper proposes two models consist of a Server and a Client connected to each other through a Wireless router over TCP protocol, XML data base is a sample of DBLP with size of 10 MB loaded on the Server and SOAP messages are used to communicate between both terminals. Finally we compared results between No. of replayed nodes, time and XPath queries, also compared the effects of unsigned and signed SOAP messages .

Keywords :

: Digital Signature, SOAP message, XML trees, XML tuples, XPath .

References :

[1]     Ed Simon, Paul Madsen, Carlisle Adams, "An Introduction to XML Digital Signatures", 2001.
[2]     "XML and Semantic Web W3C Standards Timeline", February 04,2012.
[3]     Bergeron, Randy, "XPath-Retrieving Nodes from an XML Document", October 31, 2000.
[4]     Pierre Geneves, "Course- The XPath Language", October 2012.
[5]     Pierre Geneves, "Logics for XML", December 2006.
[6]     Sebastian Gajek, Lijun Liao and Jörg Schwenk, "Breaking and Fixing the Inline Approach".
[7]     Andrea Tagarelli, Sergio Greco, "Toward Semantic XML Clustering".
[8]     M. Arenas and L. Libkin, "A Normal Form for XML Documents", ACM Trans. Database Systems, 29(1):195–232, 2004.
[9]     S. Flesca, F. Furfaro, S. Greco, and E. Zumpano, "Repairs and Consistent Answers for XML Data with Functional Dependencies", In Proc. Int. XML Database Sym-posium (XSym), pages 238–253, 2003.

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