Practice Recovery Concepts: Log-based Recovery (undo/redo Logging) (10.2) - Database Recovery
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Engineering Courses
Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Certifications
Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

Recovery Concepts: Log-Based Recovery (Undo/Redo Logging)

Practice - Recovery Concepts: Log-Based Recovery (Undo/Redo Logging)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is log-based recovery?

💡 Hint: Think about how databases keep records of operations.

Question 2 Easy

Define Write-Ahead Logging (WAL).

💡 Hint: Remember the sequence of operations in recovery.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the primary purpose of log-based recovery?

To enhance performance
To ensure data integrity
To simplify transaction management

💡 Hint: Consider the risks of data loss.

Question 2

True or False: Undo Logging applies changes from uncommitted transactions.

True
False

💡 Hint: Think about what happens in a failure.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A transaction processes an update to an account balance and then fails. Describe how undo logging would be applied to restore the balance to its original state.

💡 Hint: Think of the log as a memory aid to undo changes.

Challenge 2 Hard

After a crash, a DBMS needs to recover. Outline the steps it would take using combined undo/redo logging, specifying the purpose of each step.

💡 Hint: Break down and label each phase of recovery.

Get performance evaluation

Reference links

Supplementary resources to enhance your learning experience.