Volume 22    Number 4    December 1993

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 Last update: June 26, 2000 Previous Issue: September 1993 Next Issue: March 1994 Send comments or suggestions to Alexandros Labrinidis.