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BUS 237 (186)
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Chapter 8

Chapter 8 Decision Making & Business Intelligence.pdf

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Simon Fraser University
Business Administration
BUS 237
Maryam Ali

Chapter 8 Decision Making & Business Intelligence July-04-12 3:13 PM Challenges in Decision Making "Management Misinformation Systems" Ackoff Misassumptionsabout info systems 1. Managers have no problems with making decision if they get all the data they need 2. Poor decisions are made because managers lack relevant info 3. Managers are aware of the data they need Information Overload • Overabundance of info • Data are growing at a rate of 30% a year • Petabyte:10 bytes, Exabyte: 10 bytes • Need to find appropriate data and incorporate them in decision processes Data Quality Raw data unsuitable for sophisticated reporting/data mining Problems • Dirty data ─ problematic data • Missing values • Inconsistent data • Data granularity ─ too coarse or too fine ○ Clickstream data: customer's clicking behaviour on websites • Data not integrated • Too much data OLTP Online Transaction Processing • Collecting data electronicallyand processing the transactions online • "real time" ─ data is immediatelyprocessed when entered, no delay in updating systems,more complex & expensive • "batch" ─ collect transactions until a batch before processing • Which type of processing depends on nature of business • Backbone of all functional, cross-functional,interorganizational systemsin a company • Efficiently enter, process, store data • Combine large databases with input devices to process transactions quickly and accurately • Support decision making by providing raw info about transactions and status of organization Challenges • Data need to be used in order to create value • Data ResourceChallenge ─ data does not improve decision making DSS/OLAP Decision Support Systems/OnlineAnalytic Processing • Systems that focus on making OLTP- collecteddata useful for decision making • Providesability to perform simple arithmetic operations on groups of data OLAP Report/Cube • Dynamic format ─ viewer of the report can change the report's structure • "drill down" ─ further divide the data into more detail Measure • Data item of interest Fact Dimension • Characteristic of measure BI System Business Intelligence system • A system the provides info for improving decision making • A system the provides info for improving decision making Reporting Systems • Integrate data from multiple sources • Processdata with simple arithmeticoperations • Improvedecision making by providing the right info to the right user at the right t
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