CHAPTER 16: QUESTIONS AND ANSWERS 1. Why are operational databases not particularly suited for decision support applications? Ans: Operational databases must be cleaned and…
Slide 1 Approximate Frequency Counts over Data Streams Gurmeet Singh Manku (Standford) Rajeev Motwani (Standford) Presented by Michal Spivak November, 2003 Slide 2 The Problem…
Slide 1 An Array-Based Algorithm for Simultaneous Multidimensional Aggregates Y. Zhao, P. Deshpande, J. Naughton Slide 2 Motivation Previous papers showed the usefulness…
Slide 1 Summarizing Data with CUBE and ROLLUP Slide 2 SQL ROLLUP and CUBE commands Quick, efficient way to summarize the data stored in your database Offer a valuable tool…
Slide 1 Summarizing Data with CUBE and ROLLUP SQL ROLLUP and CUBE commands Quick, efficient way to summarize the data stored in your database Offer a valuable tool for gaining…