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Lecture Notes for BU 294 - Intro to Information Systems with Tollison at Mississippi University for Women (MUW)

Notes Information

Material Type:Class Note
Professor:Tollison
Class:BU 294 - Intro to Information Systems
Subject:Business
University:Mississippi University for Women
Term:Fall 2006
Keywords:
  • Data Mining Tools
  • Data Administration
  • Operational Databases
  • Data Warehouses
  • Data Warehouse
  • Chief Information Officer (cio)
  • Database Administration
  • Information
  • Organization
  • Manipulation
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Sample Document Text

Data Warehouses September 18 – September 22  What is a Data Warehouse: o A data warehouse is a logical collection of information gathered from many different operational databases used to create business intelligence that supports business analysis activities and decision-making tasks (p. 140). o Why are organizations opting to build data warehouses (p. 140)?  Traditional operational databases do not have the ability to building business intelligence or performing advanced manipulation.  Operational databases are already occupied with the task of processing transactions. o Data warehouses support decision-making, but do not support transaction processing. Data warehouses support only OLAP (p. 141). o Operational databases are two-dimensional. Data warehouses are made threedimensional (see Figure 3.8) by combining operational databases to form layers of columns and rows. o Data warehouses are not for everybody. They are very expensive and require a lot of support. Also, some organizations can m...

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