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Data Warehousing
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Question
The generic two-level data warehouse architecture includes which of the following?
Options
A. At least one data mart
B. Data that can extracted from numerous internal and external sources
C. Near real-time updates
D. All of the above.
Correct Answer
Data that can extracted from numerous internal and external sources
More questions
1. OLE DB tabular data providers present data in the form of rowsets.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
2. A tuple is a(n):
Options
A. column of a table.
B. two dimensional table.
C. row of a table.
D. key of a table.
Show Answer
Scratch Pad
Discuss
Correct Answer: row of a table.
3. Which of the following types of databases are the most common?
Options
A. Personal
B. Workgroup
C. Department
D. Enterprise
Show Answer
Scratch Pad
Discuss
Correct Answer: Department
4. In unsupervised data mining, explanations are created after patterns are found.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
5. Java bytecode is machine-specific code.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
6. A star schema has what type of relationship between a dimension and fact table?
Options
A. Many-to-many
B. One-to-one
C. One-to-many
D. All of the above.
Show Answer
Scratch Pad
Discuss
Correct Answer: One-to-many
7. A OLE DB rowset is an abstraction of a relation, which in turn is an abstraction of a recordset.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
8. SQL*Plus will finish the statement and execute it when the user types in this:
Options
A. A left slash ( \ ) followed by [Enter].
B. A colon ( : ) followed by [Enter].
C. A semicolon ( ; ) followed by [Enter].
D. A period ( . ) followed by [Enter].
Show Answer
Scratch Pad
Discuss
Correct Answer: A semicolon ( ; ) followed by [Enter].
9. Business Intelligence (BI) systems do not obtain data from operational databases.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
10. Centralized systems are more susceptible to security threats than client/server architectures.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
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