
Data Warehousing and Mining Quiz
Quiz
•
Computers
•
University
•
Practice Problem
•
Hard
JENEFA NAVEEN
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a type of Data Warehouse model?
Enterprise Warehouse
Data Mart
Virtual Warehouse
Distributed Transaction Store
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In OLAP, which operation involves viewing data from different perspectives?
Drill-down
Roll-up
Slice and Dice
Pivot
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which schema uses fact tables linked to multiple dimension tables?
Star Schema
Snowflake Schema
Fact Constellation
Dimension Schema
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The role of concept hierarchies in OLAP is to:
Support data summarization
Store raw data
Improve transaction speed
Index cube dimensions
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT an OLAP operation?
Roll-up
Drill-down
Join
Pivot
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fact constellation schema is also called:
Galaxy Schema
Star Schema
Snowflake Schema
Fact Table
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metadata repository in Data Warehousing is used for:
Storing operational data
Storing data about data
Transaction processing
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