Result merging technique for answering XPath query over XSLT transformed data

Sven Groppe*, Jinghua Groppe, Dirk Müller

*Corresponding author for this work
1 Citation (Scopus)


Caching stores the results of previously answered queries in order to answer succeeding queries faster by reusing these results. We propose two different approaches for using caches of XSLT transformed XML data in order to answer queries. The first approach checks whether or not a current query Q can be directly answered from the result of a previously answered query Qi stored in the cache. The new query is otherwise submitted to the source over the network, the answer of the query is determined, transmitted back to the client, and stored in the cache. The second approach determines only the intersection Q - Qi and integrates the result of Q-Qi into the previous results in the cache, which requires applying a numbering scheme for the output of the XSLT stylesheet. We show by experimental results that the second approach can significantly speed up the answering time in comparison to the first approach, but is not significantly slower in few worst cases than the second approach.

Original languageEnglish
Article number4653493
JournalIEEE Transactions on Knowledge and Data Engineering
Issue number9
Pages (from-to)1328-1342
Number of pages15
Publication statusPublished - 01.09.2009

Research Areas and Centers

  • Research Area: Intelligent Systems
  • Centers: Center for Artificial Intelligence Luebeck (ZKIL)

DFG Research Classification Scheme

  • 409-06 Information Systems, Process and Knowledge Management
  • 409-04 Operating, Communication, Database and Distributed Systems


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