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• 
  Enrico Franconi, Michael Kifer:
  Proceedings of the 6th International Workshop on Knowledge Representation meets Databases (KRDB'99), Linköping, Sweden, July 29-30, 1999. CEUR Workshop Proceedings 21, CEUR-WS.org 1999

KRDB'99 is an affiliate event with the International Joint Conference on Artificial Intelligence (IJCAI'99, Stockholm, 3-6 August 1999), and the International Workshop on Description Logics (DL'99, Linköping, July 30 - August 1 1999).

KRDB'99 is sponsored by the European ESPRIT Compulog Network of Excellence in Computational Logic, and by the European ESPRIT Foundations on Data Warehouse Quality (DWQ) Long Term Research project.

• 
  Title, Table of Contents, Preface.
• 
  Alessandro Artale, Enrico Franconi:
  Reasoning with enhanced Temporal Entity-Relationship Models. 1-5
• 
  Diego Calvanese, Giuseppe De Giacomo, Maurizio Lenzerini:
  Answering Queries Using Views in Description Logics. 6-10
• 
  Robert Demolombe:
  Database Validity and Completeness: Another Approach and its Formalisation in Modal Logic. 11-13
• 
  Chung Hee Hwang:
  Incompletely and Imprecisely Speaking: Using Dynamic Ontologies for Representing and Retrieving Information. 14-20
• 
  Yaron Kanza, Werner Nutt, Yehoshua Sagiv:
  Incomplete Answers for Queries over Semistructured Data. 21-25
• 
  Hans-Joachim Klein:
  Efficient Algorithms for Approximating Answers to Queries Against Incomplete Relational Databases. 26-30
• 
  Wenjin Lu:
  View Updates in Disjunctive Deductive Databases Based on SLD-Resolution. 31-35
• 
  Agenor Martins, Edilson Ferneda:
  Case-Based Query Answering: A Model Using Cognitive Similarity. 36-40
• 
  Takao Miura, Isamu Shioya:
  Incremental Update of Decision Trees for Temporal Objects. 41-45
• 
  Susanne Prediger, Gerd Stumme:
  Theory-driven Logical Scaling: Conceptual Information Systems meet Description Logics. 46-49
• 
  Marie-Christine Rousset:
  Backward Reasoning in Aboxes for Query Answering. 50-54

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