Data & Knowledge Engineering, Volume 26, 1998

Volume 26, Number 1, May 1998

• C. A. Johnson:
  Top-Down Query Processing in Indefinite Stratified Databases. 1-36
  
• Dominique Laurent, Viet Phan Luong, Nicolas Spyratos:
  Updating Intensional Predicates in Deductive Databases. 37-70
  
• Chiang Lee, Te-Ming Tseng:
  Temporal Grid File: A File Structure for Interval Data. 71-97
  
• Chengfei Liu, Hui Li, Maria E. Orlowska:
  Supporting Update Propagation in Object-Oriented Databases. 99-115
  

Volume 26, Number 2, June 1998

• Chin-Chen Chang, Chin-Feng Lee:
  A Bin-Tree Oriented Iconic Indexing Scheme for Retrieving Symbolic Pictures. 121-133
  
• Anthony Hunter, Peter McBrien:
  Default Databases: Extending the Approach of Deductive Databases Using Default Logic. 135-160
  
• Alun D. Preece, Clifford Grossner, P. Gokul Chander, Thiruvengadam Radhakrishnan:
  Structure-Based Validation of Rule-Based Systems. 161-189
  
• Michael Schrefl, Gerti Kappel, Peter Lang:
  Modeling Collaborative Behavior Using Cooperation Contracts. 191-224
  
• Robert Winter:
  Design and Implementation of Derivation Rules in Information Systems. 225-241
  

Volume 26, Number 3, July 1998

• Dieter Fensel, Rix Groenboom, Gerard R. Renardel de Lavalette:
  Modal Change Logic (MCL): Specifying the Reasoning of Knowledge-Based Systems. 243-269
  
• John L. Knapp:
  ER Isomorphisms and Uniqueness Conditions. 271-290
  
• Günther Pernul, A. Min Tjoa, Werner Winiwarter:
  Modelling Data Secrecy and Integrity. 291-308
  
• Young U. Ryu:
  Specification of Contractual Obligations in Formal Business Communication. 309-326
  
• Gabriele Schmidt, Thomas Wetter:
  Using Natural Language Sources in Model-Based Knowledge Acquisition. 327-356