document: Incremental maintenance for materialized XPath\/XSLT views This paper proposes an incremental maintenance algorithm that efficiently updates the materialized XPath\/XSLT views defined using XPath expressions in XP ( ( ) , \* , \/ \/ , vars ) . The algorithm consists of two processes . 1 ) The dynamic execution flow of an XSLT program is stored as an XT ( XML Transformation ) tree during the full transformation . 2 ) In response to a source XML data update , the impacted portions of the XT-tree are identified and maintained by partially re-evaluating the XSLT program . This paper discusses the XPath\/XSLT features of incremental view maintenance for subtree insertion\/deletion and applies them to the maintenance algorithm . Experiments show that the incremental maintenance algorithm outperforms full XML transformation algorithms by factors of up to 500 .
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