首页>
外国专利>
Methods and apparatus for performing structural joins for answering containment queries
Methods and apparatus for performing structural joins for answering containment queries
展开▼
机译:用于执行结构联接以回答容纳查询的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
Techniques are provided for performing structural joins for answering containment queries. Such inventive techniques may be used to perform efficient structural joins of two interval lists which are neither sorted nor pre-indexed. For example, in an illustrative aspect of the invention, a technique for performing structural joins of two element sets of a tree-structured document, wherein one of the two element sets is an ancestor element set and the other of the two element sets is a descendant element set, and further wherein each element is represented as an interval representing a start position and an end position of the element in the document, comprises the following steps/operations. An index is dynamically built for the ancestor element set. Then, one or more structural joins are performed by searching the index with the interval start position of each element in the descendant element set.
展开▼