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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 concurrency control in databases?
💡 Hint: Think about how multiple actions on the same data can cause issues.
Question 2
Easy
In lock-based protocols, what is a shared lock used for?
💡 Hint: Consider whether the data is being modified or just accessed.
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 does a lock do in a database?
- Allows many transactions to modify data simultaneously
- Prevents other transactions from accessing data
- Guarantees that data is saved correctly
💡 Hint: Consider the purpose of locking in regard to data safety.
Question 2
True or False: Timestamp-based protocols can experience deadlocks.
- True
- False
💡 Hint: Think about how transactions interact without locks.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You are designing a system using validation-based protocols. What strategies can you implement to minimize the drawback of frequent transaction aborts?
💡 Hint: Consider how managing transaction priorities might ease the process.
Question 2
Create a diagram illustrating a deadlock scenario using Two-Phase Locking and explain the situation caused.
💡 Hint: Think about how changing the order of lock requests can help avoid deadlocks.
Challenge and get performance evaluation