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CAiSE*94, 610 June 1994, Utrecht, The Netherlands. Designing a User-Oriented Query Modification Facility
 

Summary: CAiSE*94, 6­10 June 1994, Utrecht, The Netherlands.
Designing a User-Oriented Query Modification Facility
in Object-Oriented Database Systems
K. Aberer, W. Klas, A. L. Furtado1
GMD-IPSI, Dolivostr. 15, 64293 Darmstadt, Germany,
E-Mail: {aberer, klas, furtado}@darmstadt.gmd.de
Abstract. The introduction of user-assisting features into database systems is
discussed along two stages. The first stage involves a basic facility that can be used
with standard database systems, whereas in the second stage such features are
expanded in order to cope with object-oriented systems, adopting semantically
richer data models. Examples involving categorization and role-specialization
semantichierarchiesillustratethediscussion.Aclass/metaclassarchitecture,suchas
that of the VODAK database system, an algebraic view of query processing and an
extension of the object-oriented data model by rule systems are shown to be
particularlysuitabletodesignandimplementuserassistanceonthedatabaseschema
level.
1 Introduction
As increasingly complex databases are designed, end users may find them too difficult
to use. One runs the risk to produce systems that are rich in terms of the information they
contain, but that no one is able to use appropriately. The problems of accessing data in a

  

Source: Aberer, Karl - Faculté Informatique et Communications, Ecole Polytechnique Fédérale de Lausanne

 

Collections: Computer Technologies and Information Sciences