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With an increasing amount of data and demand for fast query processing, the efficiency of database operations continues to be a challenging task. A common approach is to leverage parallel hardware platforms. With the introduction of general-purpose GPU (Graphics Processing Unit) computing, massively parallel hardware has become available within commodity hardware. XML is based on a tree-structured data model. Naturally, the most popular XML querying language (XPath) uses patterns of selection predicates on multiple elements, related by a tree structure. These are often abstracted by twig patterns. Finding all occurrences of such a (XML query) twig pattern in an XML document is a core operation for XML query processing.
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