Bulletin of the Technical Committee on


December 1999 Vol. 22 No. 4   IEEE Computer Society


Letter from the Editor-in-Chief   David Lomet 1
TC on Data Engineering: Election of Chair for 2000-01   Paul Larson 2
TC on Data Engineering Election Ballot     3
Letter from the Special Issue Editor   Amr El Abbadi 4

Special Issue on Retrieval and Maintenance of Summary Data

Approximate Query Answering Using Histograms   Viswanath Poosala, Venkatesh Ganti, Yannis E. Ioannidis 5
The Role of Approximations in Maintaining and Using Aggregate Views   Daniel Barbará and Xintao Wu 15
Some Approaches to Index Design for Cube Forests   Theodore Johnson and Dennis Shasha 22
Data Cubes in Dynamic Environments   Steve Geffner, Mirek Riedewald, Divyakant Agrawal and Amr El Abbadi 31
On Sampling and Relational Operators   Surajit Chaudhuri and Rajeev Motwani 35

Announcements and Notices

2000 Data Engineering Conference   backcover