SEPTEMBER 1982 VOL.5 NO.3 a quarterly bulletin of the IEEE computer society technical committee on Database S Contents Query Optimization in INGRES R. Kooi and D. Frankforth Query Processing in Universal Relation Systems JO. Uliman Query Optimization Research in the Database Programming Languages (DBPL)Project M. Jarke, J. Koch, M. Mall, and J.W. Schmidt Distributed Query Compilation and Processing in R* D. Daniels and P. Ng A Methodology tor Query Optimization in Distributed Database Systems C.-W. Chung and K. Irani Distributed Query Processing at Laboratoire IMAG G.T. Nguyen ri Research Directions in Query Optimization at the University of Maryland AR. Hevner and SB. Yao Research on Query Optimization at Computer Corporation of America U. Dayal and D. Ries Processing Multiple Queries in Database Systems U.S. Chakravarthy and J. Minlcer Some Thoughts on the Future Direction of Query Processing W. Kim Issues in Query Evaluation S. Christodoulakis Investigating Access Paths for Aggregates Using the Abe” Statistical Query Facility A. KIug Strategy Spaces and Abstract Target Machines for Query Optimization D. Reiner and A. Rosenthal 28 2 6 11 15 19 24 33 38 44 48 52 56