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Knowledge exercises·Independent answers
Principles and Solutions have been collapsed. Explain the core mechanism, boundaries and verification methods in your own words, and then compare them.
Answers and personal notes
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Explain in your own words first
The core principles, analysis, Q&A and migration cases have been closed. When you are ready, unfold it and compare it with the content to find any omissions.
Hands-on verificationComplete on demand · Suggestions15 minutes
For three database configuration records arriving out of order, derive the current value and the previous month's value.
Expand acceptance requirements and checkpoints
- Observation time does not pretend to be effective time
- Don’t mix different projects
- Preserve conflicts if they cannot be adjudicated
Key inspections
- Determine whether there is a conflict based on scope
- Distinguish between observation time and effective time
- Concurrent updates and error correction traceable