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    • 6. 发明申请
    • COMPLEX PATH-BASED QUERY EXECUTION
    • 复杂路径查询执行
    • US20110131200A1
    • 2011-06-02
    • US12628458
    • 2009-12-01
    • Xiao Ming ZHOUTat-Keong LohMohyuddin RehmattullahMichelle Lim
    • Xiao Ming ZHOUTat-Keong LohMohyuddin RehmattullahMichelle Lim
    • G06F17/30
    • G06F16/8373
    • Systems, methods, computer program product embodiments are provided for executing a function in a path-based query when extracting data from a markup language document for return as a relational table, the markup language document organized hierarchically into nodes. An embodiment includes receiving a path-based query including a complex row pattern and column definition, forming multiple sets of nodes based on a simplified row pattern and column definition, determining ancestor-descendent pairings for the nodes in the column definition set, and utilizing the ancestor-descendent pairings with the simplified row pattern to return a relational table satisfying the complex path-based query. An embodiment further includes extensible markup language (XML) as the markup language, and an XPath query expression as the complex path-based query.
    • 提供了系统,方法,计算机程序产品实施例,用于当从标记语言文档中提取数据作为关系表时,在基于路径的查询中执行功能,标记语言文档分层组织成节点。 一个实施例包括基于简化的行模式和列定义接收包括复杂行模式和列定义的基于路径的查询,形成多组节点,确定列定义集中的节点的祖先 - 后代配对,以及利用 祖先 - 后代配对与简化的行模式返回一个满足复杂路径查询的关系表。 一个实施例还包括作为标记语言的可扩展标记语言(XML)以及作为基于复杂路径的查询的XPath查询表达式。