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4 cards from this section. Quick, good the night before a test.
What is indexing in a database context?
Think about how a book's index helps you find specific topics quickly.
Why should you avoid SELECT * in queries?
What happens when you request data that isn't necessary?
What does indexing do in a database?
Remember how a book index works.
True or False: Caching can lead to outdated information being displayed.
What happens if the original data gets updated?
You have a large e-commerce database with millions of users and orders. Design a query optimization strategy to improve performance during the holiday season when traffic spikes.
Consider both preemptive measures and real-time adjustments.
A client complains of slow application load times. Your investigation shows frustrating delays when fetching user profile data. How would you address the situation?
What improvements could you recommend for both speed and accuracy?
6 more questions in this section. Enroll free to practise them all.
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