
Data Warehousing Concepts Quiz
Quiz
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Computers
•
University
•
Practice Problem
•
Easy
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best defines a Data Warehouse?
A system used for transactional data processing
A centralized repository for historical data analysis
A replacement for operational database systems
A storage system for unstructured video content
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement correctly describes the Delivery Process in Data Warehousing?
Transfers processed data to source systems
Delivers real-time alerts to users
Moves transformed data into the warehouse
Delivers mail notifications to customers
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a key difference between a Database System and a Data Warehouse?
Databases are used for static reporting only
Warehouses store only raw, unprocessed data
Warehouses support analytical processing tasks
Databases have more historical storage than warehouses
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main feature of a Multi-Dimensional Data Model?
Uses columns and rows for table access
Organizes data into a flat file format
Represents data in a star or snowflake form
Contains only numeric and text values
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which component defines a Data Cube in a warehouse?
A list of operations and algorithms
A single table storing all raw data
A multi-dimensional array of measures
A document describing cube design
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What best describes a Star Schema?
Centralized fact table with denormalized dimensions
All dimensions are normalized hierarchies
Only one fact table linked to multiple cubes
Set of independent fact and dimension tables
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main idea of a Snowflake Schema?
Uses unstructured JSON data files
Normalizes dimensions into multiple related tables
Reduces the number of fact tables
Uses a single flat file for reporting
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