On Boosting Holism in XML Twig Pattern Matching using Structural Indexing Techniques

Searching for all occurrences of a twig pattern in an XML document is an important operation in XML query processing. Recently a holistic method TwigStack [2] has been proposed. The method avoids generating large intermediate results which do not contribute to the final answer and is CPU and I/O optimal when twig patterns only have ancestor-descendant relationships. Another important direction of XML query processing is to build structural indexes [3][8][13][15] over XML documents to avoid unnecessary scanning of source documents. We regard XML structural indexing as a technique to partition XML documents and call it streaming scheme in our paper. In this paper we develop a method to perform holistic twig pattern matching on XML documents partitioned using various streaming schemes. Our method avoids unnecessary scanning of irrelevant portion of XML documents. More importantly, depending on different streaming schemes used, it can process a large class of twig patterns consisting of b...

• Type: Conference
• Year: 2005
• Where: SIGMOD
• Authors: Ting Chen, Jiaheng Lu, Tok Wang Ling
• Keywords: Database, Partition Xml Documents, SIGMOD 2005, XML Query Processing, XML Structural Indexing