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In publish/subscribe systems, XML message filtering performed at application layer is an important operation for XML message multicast. As a specific case of content-based multicast in application layer, XML message multicast depends on the data filtering and matching processes and the forwarding and routing schemes. As the XML data emerges in transition, XML message filtering and matching becomes...
This paper proposes a cryptosystem (encrypting/decryption) for XML data using RSA (Rivest, Shamir, and Adleman) with some form of shift ciphering scheme. Such a system is designed to achieve some of security aspects such as confidentiality, authentication, and integrity, and non-repudiation. We used XML data as an experimental work. The implementation is done using VB.NET. Since, we have used RSA...
The emergence of the Web has increased interests in XML data. XML query languages such as XQuery, XPath and NEXI, they use label paths to traverse the irregularly structured data. Without efficient indexes, query processing can be quite inefficient due to an exhaustive traversal on XML data. To overcome the inefficiency, we propose a novel index method, quick terse path index (named QTPI), which contain...
A partial test oracle is proposed to verify the actual outputs in access testing on XML data. The considered software under test is a query program which receives as input an XML document obtained from an XML repository of any kind, and produces XML data as output. To deal with the actual outputs from this testing process, the partial oracle evaluates the correctness of the test executions according...
In this paper, we present an extension of PHIL, a declarative language for filtering information from XML data. The proposed approach allows us to extract relevant data as well as to exclude useless and misleading contents from an XML document. Essentially, it combines ontology reasoning with an approximate pattern-matching engine which searches for patterns in a flexible way (i.e. modulo renaming,...
In this paper, we propose a new structure-based approach, called Xregion, to store XML data in relational databases. Our approach first partitions an XML document into several disjoint regions according to the cardinality of element nodes, and then maps these regions into separate relations. Our experimental results demonstrate that the proposed approach dramatically improves the performance of queries...
A new semantic search scheme for XML data is proposed. The semantics of both XML documents and the query are enriched by domain ontology annotation. Also, the additional information provided by the structure of XML documents is considered by adding node path index, semantic keyword index and element tag index to indices. A searching algorithm is used to realize a semantic search for XML documents...
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