Online Aggregation Joe Hellerstein UC Berkeley Online Aggregation: Motivation Select AVG(grade) from ENROLL; A “fancy” interface: + Query Results AVG.
New Sampling-Based Summary Statistics for Improving Approximate Query Answers P. B. Gibbons and Y. Matias (ACM SIGMOD 1998) Rongfang Li Feb 2007.
PRESENTED BY- HARSH SINGH A Random Walk Approach to Sampling Hidden Databases By Arjun Dasgupta, Dr. Gautam Das and Heikki Mannila.
Deferred Maintenance of Disk-Based Random Samples Rainer Gemulla (University of Technology Dresden) Wolfgang Lehner (University of Technology Dresden)
