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Auflistung nach Autor:in "Irmert, Florian"

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  • Konferenzbeitrag
    Technische Grundlagen für eine laufzeitadaptierbare Transaktionsverwaltung
    (Datenbanksysteme in Business, Technologie und Web (BTW) – 13. Fachtagung des GI-Fachbereichs "Datenbanken und Informationssysteme" (DBIS), 2009) Irmert, Florian; Neumann, Christoph P.; Daum, Michael; Pollner, Niko; Meyer-Wegener, Klaus
    Auf spezielle Anwendungen zugeschnitte Datenbankverwaltungssysteme (DBMS) erfordern in den meisten Fällen Individuallösungen, welche einen erhöhten Entwicklungs- und Wartungsaufwand mit sich bringen. Es fehlen modulare DBMS- Architekturen als konfigurierb
  • Konferenzbeitrag
    Xpath-aware chunking of XML-documents
    (BTW 2003 – Datenbanksysteme für Business, Technologie und Web, Tagungsband der 10. BTW Konferenz, 2003) Lehner, Wolfgang; Irmert, Florian
    Dissemination systems are used to route information received from many publishers individually to multiple subscribers. The core of a dissemination system consists of an efficient filtering engine deciding what part of an incoming message goes to which recipient. Within this paper we are proposing a chunking framework of XML documents to speed up the filtering process for a set of registered subscriptions based on XPath expressions. The problem which will be leveraged by the proposed chunking scheme is based on the observation that the execution time of XPath expressions increases with the size of the underlying XML document. The proposed chunking strategy is based on the idea of sharing XPath prefixes among the query set additionally extended by individually selected nodes to be able to handle XPath-filter expressions. Extensive tests showed substantial performance gains.