ACM Transactions on Database Systems (TODS) , Volume 23

Volume 23, Number 1, March 1998

• Curtis E. Dyreson, Richard T. Snodgrass:
  Supporting Valid-Time Indeterminacy. 1-57
  
• Peter Z. Revesz:
  Safe Query Languages for Constraint Databases. 58-99
  
• Alexei P. Stolboushkin, Michael A. Taitslin:
  Safe Stratified Datalog with Integer Order Does Not Have Syntax. 100-109
  

Volume 23, Number 2, June 1998

• Joseph M. Hellerstein:
  Optimization Techniques for Queries with Expensive Methods. 113-157
  
• Xiangning Liu, Abdelsalam Helal, Weimin Du:
  Multiview Access Protocols for Large-Scale Replication. 158-198
  
• Sharad Mehrotra, Rajeev Rastogi, Henry F. Korth, Abraham Silberschatz:
  Ensuring Consistency in Multidatabases by Preserving Two-Level Serializability. 199-230
  

Volume 23, Number 3, September 1998

• Elisa Bertino, Claudio Bettini, Elena Ferrari, Pierangela Samarati:
  An Access Control Model Supporting Periodicity Constraints and Temporal Reasoning. 231-285
  
• Silvana Castano, Valeria De Antonellis, Maria Grazia Fugini, Barbara Pernici:
  Conceptual Schema Analysis: Techniques and Applications. 286-332
  
• Anna Formica, Hans Dietmar Gröger, Michele Missikoff:
  An Efficient Method for Checking Object-Oriented Database Schema Correctness. 333-369
  

Volume 23, Number 4, December 1998

• David Konopnicki, Oded Shmueli:
  Information Gathering in the World-Wide Web: The W3QL Query Language and the W3QS System. 369-410
  
• A. Prasad Sistla, Ouri Wolfson, Yelena Yesha, Robert H. Sloan:
  Towards a Theory of Cost Management for Digital Libraries and Electronic Commerce. 411-452
  
• Justin Zobel, Alistair Moffat, Kotagiri Ramamohanarao:
  Inverted Files Versus Signature Files for Text Indexing. 453-490