Building Dynamic Market Places Using HyperQueries Christian Wiesner Peter Winklhofer Alfons Kemper Universität Passau.

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Presentation transcript:

Building Dynamic Market Places Using HyperQueries Christian Wiesner Peter Winklhofer Alfons Kemper Universität Passau

Traditional Virtual Market Places Traditional techniques Replicate data in a central data warehouse Severe problems Security and privacy violations Coherence problems Schema integration problems Fixed query operators Data Warehouse Replication

HyperQuery Market Places HyperQuery framework Market place is intermediary Distribute query processing along allocation schema of data Objects & queries flow through the WWW Scalability HQ Market Place Query Processing Registration

Architecture QueryFlow ServiceManager QueryFlow Services MP Services Register Products Register HyperQuery Register Supplier ObjectGlobe: - Distributed Query Processor - Basic Security QueryFlow CoreSystem HyperQuery Engine (QueryFlow Operators) HyperQuery Instantiator HyperQuery Authenticator XML Integration Messaging Service SOAP

Demonstration Example market place Customers join the market place Companies join the market place Query processing ObjectGlobe: Ubiquitous query processing on the Internet Braumandl et.al. VLDBJ 2001 HyperQueries: Dynamic Distributed Query Processing on the Internet Kemper, Wiesner. VLDB passau.de/projects/QueryFlow