Exam 7: Databases and Data Warehouses
Exam 1: Business Information Systems69 Questions
Exam 2: Strategic Uses of Information Systems56 Questions
Exam 3: Business Functions and Supply Chains61 Questions
Exam 4: Business Hardware62 Questions
Exam 5: Business Software69 Questions
Exam 6: Business Networks and Telecommunications87 Questions
Exam 7: Databases and Data Warehouses70 Questions
Exam 8: The Web-Enabled Enterprise75 Questions
Exam 9: Challenges of Global Information Systems69 Questions
Exam 10: Decision Support and Expert Systems75 Questions
Exam 11: Business Intelligence and Knowledge Management63 Questions
Exam 12: Systems Planning and Development73 Questions
Exam 13: Choices in Systems Acquisition66 Questions
Exam 14: Risks, Security, and Disaster Recovery75 Questions
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What does metadata include?
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Correct Answer:
Metadata includes:
-The source of the data,including contact information.
-Tables that are related to the data.
-Field and index information,such as the size and type of the field (e.g.,whether it is text or numeric),and the ways the data is sorted.
-Programs and processes that use the data.
-Population rules: what is inserted,or updated,and how often.
In the database approach,a(n)_________ is any object about which an organization chooses to collect data.
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Correct Answer:
entity
In the_________ phase,specialists ensure that all data is consistent.
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In relational database,a record or row is called a_________ .
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One of the most useful manipulations of object-oriented databases (ODBs) is the creation of a new table from two or more other tables.
(True/False)
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Organizations often organize their data warehouse as a collection of_________ ,smaller collections of data that focus on a particular subject or department.
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A(n)_________is the field by which records in a table are uniquely identified.
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In the context of data management, _________refers to all the occurrences sharing the same types of data.
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To retrieve records from a relational database,or to sort them,you must use a key.
(True/False)
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A(n)_________ is created "on the fly" as a result of a query and exists only for the duration the user wishes to view it or to create a paper report from it.
(Multiple Choice)
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The conceptual blueprint of a database is called a(n)_________ .
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A collection of related records,such as all the records of a college's students,is called a(n) _________.
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From a technical point of view,online databases that are used with Web browsers are different from other databases.
(True/False)
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The combined storage of both data and the procedures that manipulate the data within an object is referred to as
_____.
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There are two overall approaches to maintaining data: the traditional file approach-which has no mechanism for tagging,retrieving,and manipulating data-and the_________ ,which does have this mechanism.
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A(n) _________creates a temporary table that is a subset of the original table or tables.
(Short Answer)
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The larger the data warehouse,the larger the storage capacity,the greater the memory,and the greater the processing power of the computers that are needed.
(True/False)
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