
Quiz on Data Cube Operations
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Other
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University
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Practice Problem
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Hard
ragha priya
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a slice in the context of data cubes?
A subset of the cubes for a single value of one or more dimensions
A method to store data in relational databases
A visualization operation that rotates data axes
A selection on multiple dimensions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the dice operation do?
It selects data based on one dimension
It rotates the data axes for visualization
It stores data in a multidimensional cube
It describes a sub cube by selecting on two or more dimensions
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about the pivot operation?
It stores data in relational databases
It is also called a rotation and provides an alternative presentation of data
It is a method for fast query results
It creates a new sub cube from one dimension
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does MOLAP stand for?
Multilevel OLAP
Multidimensional Online Analytical Processing
Multidimensional OLAP
Multilevel Online Analytical Processing
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is data stored in ROLAP?
In hybrid formats
In multidimensional cubes
As tables in a relational database
In flat files
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a characteristic of HOLAP?
It only uses SQL for queries
It combines features of MOLAP and ROLAP
It is the fastest query method
It stores all data in cubes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of a slice operation on a three-dimensional cube?
A three-dimensional cube
A two-dimensional site
A one-dimensional array
A relational database table
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