Master SQL for Data Analysis - Our Learning Objectives-2

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Computers
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10th - 12th Grade
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of loading datasets into a database management system in the initial phase of data analysis?
To perform data cleaning
To prepare data for creating queries
To generate reports
To visualize data trends
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which SQL operators are used to combine data from multiple tables?
GROUP BY, ORDER BY, LIMIT
CREATE, ALTER, DROP
SELECT, INSERT, UPDATE
UNION, INTERSECT, JOIN
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can subqueries be beneficial in SQL?
They allow for data visualization
They enable nesting of queries for complex data retrieval
They simplify data entry
They enhance database security
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the CASE statement in SQL?
To execute loops
To manage database connections
To perform arithmetic operations
To apply conditional logic for data transformation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key advantage of using window functions in SQL?
They improve database indexing
They enable complex data analysis with aggregate functions
They allow for data encryption
They facilitate the creation of user interfaces
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