Exam 15: Databases for Decision Support
Exam 1: The Database Approach70 Questions
Exam 2: Database Development Process100 Questions
Exam 3: Data Models70 Questions
Exam 4: Relational Model Characteristics100 Questions
Exam 5: Beginning Structured Query Language Sql100 Questions
Exam 6: Procedural Language Sql and Advanced Sql100 Questions
Exam 7: Data Modeling With Entity Relationship Diagrams100 Questions
Exam 8: Data Modeling Advanced Concepts70 Questions
Exam 9: Normalizing Database Designs100 Questions
Exam 10: Distributed Databases70 Questions
Exam 11: Interacting With Databases Through the Web100 Questions
Exam 12: Database Administration and Security100 Questions
Exam 13: Managing Transactions and Concurrency70 Questions
Exam 14: Managing Database and Sql Performance70 Questions
Exam 15: Databases for Decision Support100 Questions
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The data warehouse development life cycle differs from classical systems development.
(True/False)
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Multidimensional data analysis techniques include advanced computational functions.
(True/False)
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In 2008, Wal-Mart, the world's largest company, had over four ____ of data in its data warehouses.
(Multiple Choice)
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A data ____________________ is a small, single-subject data warehouse subset that provides decision support to a small group of people.
(Short Answer)
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It is a relatively easy task to provide a precise list of characteristics of data-mining tools.
(True/False)
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Because a data cube's dimensions are predefined, all cells are populated.
(True/False)
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A ____ schema is a type of star schema in which the dimension tables can have their own dimension tables.
(Multiple Choice)
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Had ____ been as pivotal to business operations a few years back, crises precipitated by the likes of Enron, WorldCom, and Arthur Andersen might have been avoided.
(Multiple Choice)
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____________________ online analytical processing provides OLAP functionality by using relational databases and familiar relational query tools to store and analyze multidimensional data.
(Short Answer)
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Data mining is part of the "____" section of the business intelligence framework.
(Multiple Choice)
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The star schema is designed to optimize data query operations rather than data update operations.
(True/False)
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The most distinct characteristic of modern OLAP tools is their capacity for ____________________ analysis.
(Short Answer)
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What is the ROLLUP extension to the GROUP BY clause? Provide the syntax for this extension.
(Essay)
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In a star schema, attributes are often used to search, filter, or classify ____.
(Multiple Choice)
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To tie a KPI to the strategic master plan of an organization, a KPI will be compared to a desired goal within a specific time frame.
(True/False)
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The attribute hierarchy provides a top-down data organization that is used for two main purposes: ____ and drill-down/roll-up data analysis.
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