1. Data model for extensible support of explicit relationships in design databases

   • Joan Peckham
   • Bonnie MacKellar
   • Michael Doherty

   OriginalPaper Pages: 157 - 191

2. Updating knowledge bases while maintaining their consistency

   • Ernest Teniente
   • Antoni Olivé

   OriginalPaper Pages: 193 - 241

3. Realm-based spatial data types: The ROSE algebra

   • Ralf Hartmut Güting
   • Markus Schneider

   OriginalPaper Pages: 243 - 286

4. InterViso: Dealing with the complexity of federated database access

   • Marjorie Templeton
   • Herbert Henley
   • Darrel J. Van Buer

   OriginalPaper Pages: 287 - 317