tsql@cs.arizona.edu, or to the editor at Aalborg University, Datalogi, Fr. Bajers Vej 7E, DK–9220 Aalborg ├ÿ, Denmark,

csj@iesd.auc.dk. Affiliations and e-mail addresses of the authors follow. J. Clifford, Information Systems Dept., New York University,

jcliffor@is-4.stern.nyu.edu; C. Dyreson, Computer Science Dept., University of Arizona

curtis@cs.arizona.edu; S. K. Gadia, Computer Science Dept., Iowa State University,

gadia@cs.iastate.edu; N. Kline, Computer Science Dept., University of Arizona,

kline@cs.arizona.edu; D. Nonen,

daniel@cs.concordia.ca; J. F. Roddick, School of Computer and Information Science, University of South Australia

roddick@unisa.edu.au; A. Segev, School of Business Adm. and Computer Science Research Dept., University of California,

segev@csr.lbl.gov; R. T. Snodgrass, Computer Science Dept., University of Arizona,

rts@cs.arizona.edu; A. Tansel, Bernard M. Baruch College, City University of New York