Exam 3: Database Systems,data Centers,and Business Intelligence
Exam 1: Information Systems in Perspective85 Questions
Exam 2: Hardware and Software85 Questions
Exam 3: Database Systems,data Centers,and Business Intelligence85 Questions
Exam 4: Telecommunications,the Internet,intranets,and Extranets85 Questions
Exam 5: Electronic and Mobile Commerce and Enterprise Systems85 Questions
Exam 6: Information and Decision Support Systems84 Questions
Exam 7: Knowledge Management and Specialized Information Systems85 Questions
Exam 8: Systems Development85 Questions
Exam 9: The Personal and Social Impact of Computers80 Questions
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In the context of relational database model,selecting involves combining two or more tables.
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False
Differentiate between the traditional and database approach to data management.
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At one time,information systems referenced specific files containing relevant data.For example,a payroll system would use a payroll file.Each distinct operational system used data files dedicated to that system.This approach to data management is called the traditional approach to data management.Today,most organizations use the database approach to data management,where multiple information systems share a pool of related data.For example,the Human Resources database contains lots of data about employees,and it is accessed for use by many different functions including payroll,personnel,training,etc.
______ use basic graphical symbols to show an organization of and relationships between data.
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Entity-relationship (ER)diagrams
Entity-relationship diagrams
ER diagrams
_____ is an approach to data management whereby each distinct operational system uses data files dedicated to that system.
(Multiple Choice)
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A(n)_____ is s field or set of fields in a record that uniquely defines the record.
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When organizing a database,one of the key considerations include determining who will have access to the collected data.
(True/False)
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_____ is the term used to describe enormous and complex data collections that traditional data management software,hardware,and analysis processes are incapable of dealing with them.
(Multiple Choice)
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The role of a data administrator is to plan,design,create,operate,secure,monitor,and maintain databases.
(True/False)
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In the relational database model,each row in a table represents a(n)_____.
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With _____,the database is stored on a service provider's server and accessed by the client over a network,typically the Internet.
(Multiple Choice)
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Together,bits,characters,fields,records,files,and databases form the _____.
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One of the most effective counterintelligence measures is to define _____ information relevant to a company and control its dissemination.
(Multiple Choice)
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One data cleansing solution is to identify and correct the data by cross-checking it against a validated data set.
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A(n)_____ is designed to store and retrieve data in a manner that does not rigidly enforce the atomic conditions associated with the relational database model in order to provide faster performance and greater scalability.
(Short Answer)
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Some databases use ______,which is a visual approach to developing queries and requests.
(Multiple Choice)
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_____ is a form of data mining that combines historical data with assumptions about future conditions to forecast the outcomes of events.
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One of the best ways to gain insights into data is through _____ techniques that can help quickly draw conclusions and see relationships among the data.
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A database should be designed to store all data relevant to a business and provide quick access and easy modification.
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