Web Service Mediation Through Multi-level Views
2007 (English)In: Proceedings of the CAiSE'07 Workshops and Doctoral Consortium: Vol. 2 UMICS, AOIS, WSIM, Doctoral Consortium, Trondheim, Norway: Tapir Academic Press , 2007, 755-766 p.Conference paper (Refereed)
The web Service MEDiator system (WSMED) provides general query capabilities over data accessible through web services by reading WSDL meta-data descriptions. Based on imported meta-data, the user can define views that extract data from the results of calls to web service operations. The views can be queried using SQL. The views are specified in terms of declarative queries that access different web service operations in different ways depending on what view attributes are known in a query. To enable efficient query execution over the views by automatic query transformations the user can provide semantic enrichments of the meta-data with key constraints. We evaluated the effectiveness of our approach over multi-level views of existing web services and show that the key constraint enrichments substantially improve query performance.
Place, publisher, year, edition, pages
Trondheim, Norway: Tapir Academic Press , 2007. 755-766 p.
web service views, query optimization, semantic enrichment
Research subject Computer Science with specialization in Database Technology
IdentifiersURN: urn:nbn:se:uu:diva-10969ISBN: 978-82-519-2246-3OAI: oai:DiVA.org:uu-10969DiVA: diva2:38737