MCS 2020 Chapter Notes - Chapter 8: Decision Support System, Online Transaction Processing, Decision-Making

• School: University of Guelph
• Department: Marketing and Consumer Studies
• Course: MCS 2020
• Professor: Nicole Mc Callum

Document Summary

Chapter 8 decision making and business intelligence. Decision making is a rational act in which individuals or groups consider the possible choices and the likely consequences and choose what they think is the best alternative. Megabyte (mb) 1 000 000 bytes. Gigabyte (gb) 1 000 000 000 bytes. Terabyte (tb) 1 000 000 000 000 bytes. Petabyte (pb) 1 000 000 000 000 000 bytes. Challenge in decision making is the quality of data. Data from your operational systems can be processed to create basic reports with few issues. Raw operational data are seldom suitable for more sophisticated reporting or data mining. Dirty data data may be problematic. Missing values, inconsistent data, and data not integrated are all problems. Data granularity refers to the degree of summarization or detail. Clickstream data possi(cid:271)le to (cid:272)aptu(cid:396)e the (cid:272)usto(cid:373)e(cid:396)s" (cid:272)li(cid:272)ki(cid:374)g (cid:271)eha(cid:448)iou(cid:396) Better to have granularity that is too fine rather than too coarse. Fine data express details that are too precise.