Logo des Repositoriums

Auflistung nach Autor:in "Gesmann, Michael"

1 - 2 von 2
  • Konferenzbeitrag
    The Information Integrator: using Semantic Technology to provide a single view to distributed data
    (Datenbanksysteme in Business, Technologie und Web (BTW 2007) – 12. Fachtagung des GI-Fachbereichs "Datenbanken und Informationssysteme" (DBIS), 2007) Angele, Jürgen; Gesmann, Michael
    For the integration of data that resides in autonomous data sources Software AG uses ontologies. Data source ontologies describe the data sources themselves. Business ontologies provide an integrated view of the data. FLogic rules are used to describe mappings between data objects in data source or business ontologies. Furthermore, FLogic is used as the query language. FLogic rules are perfectly suited to describe the mappings between objects and their properties. Some of these mapping rules can be generated automatically from the data sources metadata. Some patterns do frequently reoccur in user-defined mapping rules, for instance rules which establish inverse object relations or rules which create new object relations based on the objects’ property values. Within our first project access to information is still typical data retrieval and not so much knowledge inference. Therefore, a lot of effort in this project concentrated on query functionality and even more on performance. But these are only first steps. To strengthen this development and to get more experience in this field Software AG recently joined several EU research projects which all have a focus on exploitation of semantic technology with concrete business cases.
  • Konferenzbeitrag
    Manipulation von XML-Dokumenten in Tamino
    (BTW 2003 – Datenbanksysteme für Business, Technologie und Web, Tagungsband der 10. BTW Konferenz, 2003) Gesmann, Michael
    Dieser Beitrag untersucht die Frage, wie XML-Dokumente, die in Datenbanksystemen abgespeichert sind, effektiv und effizient innerhalb dieser Systeme verändert werden können. Zunächst wird skizziert, welche Lösungsansätze bereits existieren. Danach wird erläutert, wie dieses Problem in der neuen Version des XML-Datenbanksystems Tamino von der Software AG gelöst wird. Dort wird ein sprachbasierter Ansatz auf der Basis von XQuery-Erweiterungen verfolgt.