Volume 22    Number 4    December 1993  
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The articles highlighted as hypertext buttons are available on line.

EDITOR’S NOTES
CHAIR’S MESSAGE
Update on SIGMOD On-Line Services

ARTICLES:
Relational Database Integration in the IBM AS/400
S. Scholerman, L. Miller, J. Tenner, S. Tomanek and M. Zolliker
MoodView: An Advanced Graphical User Interface for OODBMSs
I. B. Arpinar, A. Dogac and C. Evrendilek
Experiences with HyperBase: A Hypertext Database Supporting Collaborative Work
U.K. Wiil
Implementation of a Graph-Based Data Model for Complex Objects
M. Levene, A. Poulovassilis, K. Benkerimi, S. Schwartz and E. Tuv
Parallel Query Processing in Shared Disk Database Systems
E. Rahm
A Performance Study of Concurrency Control in a Real-Time Main Memory Database System
L. Gruenwald and S. Liu
Role-Based Security, Object Oriented Databases & Separation of Duty
M. Nyanchama and S. Osborn

SURVEYS:
Concurrency Control in Trusted Database Management Systems: A Survey
B. Thuraisingham and H.P. Ko
A Survey on Usage of SQL
H. Lu, H.C. Chan and K.K. Wei

BIBLIOGRAPHY:
An Update of the Temporal Database Bibliography
N. Kline

DATABASE RESEARCH CENTERS:
Database Research at the Data-Intensive Systems Cente
D. Maier, L. Delcambre, C. Pu, J. Walpole, G. Graefe and L. Shapiro
Database Research at the University of Twente

DATABASE RESEARCH FUNDING:
NSF and HPCC Under Attack
M. Winslett
ANNOUNCEMENTS and CALLS FOR PAPERS
Detailed CFPs

Arie Segev / segev@csr.lbl.gov
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