Computer Science 1032A/B Lecture Notes - Lecture 7: Knowledge Management, Online Transaction Processing, Regression Analysis

• School: Western University
• Department: Computer Science
• Course: Computer Science 1032A/B
• Professor: Louis D Magguilli

Document Summary

Making the primary and support activities more productive than those of competitors. Increased productivity realized when business process become more effective and more efficient. True for commercial companies, non-profit organization and government. Enterprise-wide: through the entire company, everyone has access to. Benefits of information systems on supply chain performance. Fix bullwhip effect(have to know what customers what) Uncertainty and complexity (understand what the question is is more important than understand that the answer is) Data quality(how to pick what data you want) 3. 3 exabytes of data generated in 2010. 8 zettabytes of data generated in 2015. Expect 40% growth per year(double every two years) Dirty data(store information but store incorrectly, the single data is wrong) Inconsistent data(birth date: someone does y. m/d, some may do it in another way) Wrong granularity: too fine (you may ask birth data, but do not need the time you were born) not fine enough(not enough information)