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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a dirty read?
💡 Hint: Think about the state of the data when it's read.
Question 2
Easy
Why is uncommitted data considered risky?
💡 Hint: Consider how data integrity is affected.
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 a dirty read?
- A read of committed data
- A read from a transaction that has not yet committed
- An updated value permanently stored
💡 Hint: Think about when data is considered stable.
Question 2
True or False: A dirty read allows a transaction to see committed changes from another transaction.
- True
- False
💡 Hint: Consider the key definition.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a scenario where Transaction T1 reads a value from Transaction T2, which later rolls back its changes, discuss the impact on T1 and how it might lead to inconsistencies in the database.
💡 Hint: Think through the relationships between T1 and T2's data.
Question 2
Design a protocol to prevent dirty reads in a multi-user environment, providing justifications for your choices.
💡 Hint: Consider various isolation levels and their effects.
Challenge and get performance evaluation