Exam 10: Data Quality and Integration
Exam 1: The Database Environment and Development Process173 Questions
Exam 2: Modeling Data in the Organization121 Questions
Exam 3: The Enhanced E-R Model and Business Rules74 Questions
Exam 4: Logical Database Design and the Relational Model120 Questions
Exam 5: Physical Database Design and Performance105 Questions
Exam 6: Introduction to SQL119 Questions
Exam 7: Advanced SQL111 Questions
Exam 8: Database Application Development100 Questions
Exam 9: Data Warehousing117 Questions
Exam 10: Data Quality and Integration102 Questions
Exam 11: Data and Database Administration116 Questions
Exam 12: Distributed Databases109 Questions
Exam 13: Object-Oriented Data Modeling91 Questions
Exam 14: Using Relational Databases to Provide Object Persistence113 Questions
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Static extract is a method of capturing only the changes that have occurred in the source data since the last capture.
(True/False)
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Retention refers to the amount of data that is not purged periodically from tables.
(True/False)
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Informational and operational data differ in all of the following ways EXCEPT:
(Multiple Choice)
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Data may be loaded from the staging area into the warehouse by following:
(Multiple Choice)
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An approach in which only changes in the source data are written to the data warehouse is called ________.
(Short Answer)
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Discuss data governance and what needs to be included in a data governance program.
(Essay)
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Joining is often complicated by problems such as errors in source data.
(True/False)
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User interaction integration is achieved by creating fewer user interfaces.
(True/False)
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Data reconciliation occurs in two stages,an initial load and subsequent updates.
(True/False)
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External data sources present problems for data quality because:
(Multiple Choice)
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The process of transforming data from a detailed to a summary level is called ________.
(Short Answer)
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A technique using artificial intelligence to upgrade the quality of raw data is called:
(Multiple Choice)
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What are some of the errors and inconsistencies in data that the cleansing process is looking to rectify?
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Bit-mapped indexing is often used in a data warehouse environment.
(True/False)
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In the load and index stage of ETL,what is the difference between refresh mode and update mode?
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