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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the Phantom Problem in databases?
💡 Hint: Think about how multiple transactions might affect the same query result.
Question 2
Easy
Can you give a simple example of the Phantom Problem?
💡 Hint: Focus on counting or retrieving data conditions.
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 occurs during the Phantom Problem?
- Modified data is lost
- New data is added that affects results
- Transactions are locked indefinitely
💡 Hint: Consider how databases react to concurrent insertions during data retrieval.
Question 2
True or False: The Phantom Problem can lead to inconsistent query results within a single transaction.
- True
- False
💡 Hint: Think of how transactions influence each other's outcomes.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a banking system where transactions frequently occur, propose a solution to the Phantom Problem that minimizes performance degradation.
💡 Hint: Think about how strict isolation impacts transaction speed.
Question 2
In a retail environment, explain how the Phantom Problem could lead to issues during an end-of-day sales report and provide a preventive measure.
💡 Hint: Focus on the timing of transactions throughout the reporting period.
Challenge and get performance evaluation