@inproceedings {INPROC-1999-54,
    author = {Frank Leymann},
    title = {{A Practitioners Approach to Database Federation}},
    booktitle = {Proc. 4th Workshop on Federated Databases - Integration of Heterogeneous Information Sources (4. Workshop ``F{\"o}derierte Datenbanken'', FDBS-99)},
    publisher = {Online},
    institution = {University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Germany},
    pages = {1--18},
    type = {Workshop Paper},
    month = {November},
    year = {1999},
    language = {English},
    cr-category = {H.2 Database Management},
    ee = {http://cis.cs.tu-berlin.de/Forschung/FDBS-99/,
      http://cis.cs.tu-berlin.de/Forschung/FDBS-99/beitraege.html},
    department = {University of Stuttgart, Institute of Architecture of Application Systems},
    abstract = {During the last few years message queuing and workflow systems have been
      established as major elements of the software stack. In practice, this
      middleware is often used to cope with aspects of data federation: Message
      queuing technology is exploited for application integration. Workflows extend
      the notion of stored procedures in a federated environment and provide
      transaction management as well as monitoring features for inter-transaction
      integrity in such an environment.},
    url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-54&engl=1}
 }