The change detection for XML document can be very useful to data storage of XML DW, pattern abstracting of document and incrementalquery evaluation.
XML文档的变化检测可以广泛应用于构建XML数据仓库中的数据存储、文档模式提取以及增量查询等方面。
2
According to the practical context, this thesis raises a kind of hybrid data cube model and its query and incremental update algorithm.
另外根据实际应用背景，提出了一种混合数据立方体模型，并给出了其相应的查询和增量更新算法。
3
Moreover the paper studied and summarized the continuous query technique on the base of sliding Windows, and analyzed and compared the strategy of processing non-incremental update operator.