
1st Challenge
Authored by Camila Paris
Computers
University
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What Modeling Schema allows for Dimensions connected to other Dimensions?
Star Schema
Snowflake Schema
Compound Schema
Cloud Schema
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many types of solutions do we have for Slowly Changing Dimensions?
6
4
2
1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of a key that was created automatically to identify each row of a table without Primary Keys?
Ordinary
Foreign
Surrogate
Index
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main purpose of Hadoop?
Scale MLOps Vertically
Scale Storage and Processing Vertically
Scale Storage Horizontally
Scale Storage and Processing Horizontally
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the analytics engine that sits on top of the YARN layer in Hadoop?
Apache Spark
Apache Airflow
Snowflake
Hive
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a Snowflake Schema, what is something a Fact table will always have?
Measures
KPIs
Foreign Keys
Surrogate keys
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why were Data Warehouses initially invented?
Losing the strict structure from Relational DBs
Taking the load off from the Operational DBs for analysis
Creating Ad-Hoc queries on the fly for executives
Having a sandbox for staging changes to the Operational DB
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