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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary purpose of indexing in SQL?
💡 Hint: Think about how a book's index helps you find information faster.
Question 2
Easy
What command is used to analyze a query's execution plan?
💡 Hint: Remember, we use this command to see what SQL does when executing queries.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the purpose of a database index?
- To order data
- To speed up retrieval
- To store data
💡 Hint: Think about how a book index helps you find topics quickly.
Question 2
True or False: A materialized view is always up-to-date with the underlying data.
- True
- False
💡 Hint: Consider how cached data needs to be updated.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You are tasked with optimizing a sales table that is frequently queried for total sales by region. What strategies would you recommend?
💡 Hint: Consider both indexing and data structure strategies.
Question 2
A database system has performance issues due to a large table that is not indexed properly. What steps would you take to analyze and propose optimizations?
💡 Hint: Pay attention to the methods available for improvement through analysis.
Challenge and get performance evaluation