Volume 20, Number 1, March 1991
John T. Robinson
: Some Further Analysis of the Essential Blocking Recurrence.
: Minimal Covers Revisited: Correct and Efficient Algorithms.
Volume 20, Number 2, June 1991
, Roger King
Proceedings of the 1991 ACM SIGMOD International Conference on
Management of Data, Denver, Colorado, May 29-31, 1991.
Volume 20, Number 3, September 1991
G. H. Gessert
: Handling Missing Data by Using Stored Truth Values.
: A More General Model For Handlinh Missing Information In Relational DataBases Using A 3-Valued Logic.
H. W. Buff
: A Complete Identity Set for Codd Algebras.
: Practitioner Problems in Need of Database Research.
David S. Reiner
: Research Areas Related to Practical Problems in Automated Database Design.
: User Surveys on Database Research Needs in Finland.
Volume 20, Number 4, December 1991
Semantic Issues in Multidatabase Systems
Amit P. Sheth
: Semantic Issues in Multidatabase Systems - Preface by the Special Issue Editor.
: The Breakdown of the Information Model in Multi-Database Systems.
, Hongjun Lu
: A Note on the Strategy Space of Multiway Join Query Optimization Problem in Parallel Systems.
: The Metadatabase Project at Rensselaer.
: The Third-Generation/OODBMS Manifesto, Commercial version.
: Some Recent Developments in Deductive Databases.