Exam 3: Database Systems,data Warehouses,and Data Marts
Exam 1: Information Systems: an Overview100 Questions
Exam 2: Computers: the Machines Behind Computing100 Questions
Exam 3: Database Systems,data Warehouses,and Data Marts104 Questions
Exam 4: Personal,legal,ethical,and Organizational Issues of Information Systems100 Questions
Exam 5: Protecting Information Resources100 Questions
Exam 6: Data Communication: Delivering Information Anywhere and Anytime100 Questions
Exam 7: The Internet,intranets,and Extranets101 Questions
Exam 8: E-Commerce101 Questions
Exam 9: Global Information Systems102 Questions
Exam 10: Building Successful Information Systems100 Questions
Exam 11: Enterprise Systems98 Questions
Exam 12: Management Support Systems100 Questions
Exam 13: Intelligent Information Systems101 Questions
Exam 14: Emerging Trends,technologies,and Applications100 Questions
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A(n) _____ is software for creating,storing,maintaining,and accessing database files.
Free
(Short Answer)
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Correct Answer:
database management system (DBMS)
In a(n) _____ data model,each record can have multiple parent and child records.
Free
(Multiple Choice)
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Correct Answer:
A
The use of OR operator means that only one of the conditions in an SQL statement must be met.
Free
(True/False)
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Correct Answer:
True
Although a database can consist of only a single file,it is usually a group of files.
(True/False)
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A _____ is usually a smaller version of a data warehouse,used by a single department or function.
(Multiple Choice)
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As compared to data warehouses,consolidating information from different departments or functional areas is easier in data marts.
(True/False)
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Data warehouses are sometimes called "hypercubes" because they_____.
(Multiple Choice)
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The network data model is similar to the hierarchical data model because records are organized in the same way.
(True/False)
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List and describe the features of data in a data warehouse in contrast to data in a database.
(Essay)
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The _____ component of a database management system (DBMS) is used to add,delete,modify,and retrieve records from a database.
(Multiple Choice)
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A database engine converts logical requests from users into their physical equivalents by interacting with other components of the database management system (DBMS).
(True/False)
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In a relational model,the rows are called attributes and the columns are called tuples.
(True/False)
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With the indexed sequential access method (ISAM),records cannot be accessed randomly.
(True/False)
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The indexed sequential access method (ISAM) is slow and becomes increasingly useful as the number of records becomes larger.
(True/False)
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An advantage that a database has over a flat file system is that more information can be generated from the same data.
(True/False)
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_____ is information about data-its content,quality,condition,origin,and other characteristics.
(Multiple Choice)
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What is the function of a distributed database management system (DDBMS)?
(Essay)
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