Practice - The Transaction Log (Journal)
Practice Questions
Test your understanding with targeted questions
What is the primary purpose of the transaction log?
💡 Hint: Think about how it helps during crashes.
What does WAL stand for?
💡 Hint: It's a logging method mentioned early in our discussions.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the transaction log ensure in a database system?
💡 Hint: Think about the role of the log during system crashes.
True or False: The old value in a log record is used for redos.
💡 Hint: Consider the function of both values in the recovery process.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A transaction is in progress, modifying multiple records. Describe what will happen to the database if a sudden power outage occurs before the log has recorded the recent changes. What steps will the recovery process need to take?
💡 Hint: Consider the role of the transaction log and the properties of transactions like Atomicity.
Explain how the transaction log can support point-in-time recovery. What kind of information would be needed in the logs to facilitate this?
💡 Hint: Think about how logs can be utilized to reach a state from the past.
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Reference links
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