Towards More Informative User Interfaces

  • Jürgen M. Janas
  • Published 1979 in
    Fifth International Conference on Very Large Data…


If a data base query fails, i.e., if the required information is not available, contemporary data base systems report the fact that the query failed rather than the actual reason for the failure. We argue that the deeper reason for a failure may be detected by computing certain subqueries of the user's query. We introduce a query language based on the… (More)


  • Presentations referencing similar topics