Unverified50% confidenceFactExact time
InnoDB's MVCC is implemented by modifying rows in place and tracking old versions with an undo chain: each row hides a transaction ID and a rollback pointer, and the rollback pointer strings together old versions in the undo log to form a version chain; read committed (RC) generates a new snapshot on each statement execution, while repeatable read (RR) generates a snapshot at transaction start.
1
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50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
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