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Module 6
Logging and Recovery with ARIES
1
ACID Properties and Write-Ahead Logging (WAL)
Explain the ACID properties and the role of the Write-Ahead Logging (WAL) protocol in ensuring atomicity and durability.
2
Designing Log Record Data Structures
Design the data structures for various log record types (e.g., UPDATE, COMMIT, CHECKPOINT).
3
ARIES Recovery Phases
Describe the three phases of the ARIES recovery algorithm: Analysis, Redo, and Undo.
4
ARIES Recovery Components
Explain the role of Log Sequence Numbers (LSNs), the dirty page table, and the transaction table in ARIES.
5
ARIES Analysis for Crash Recovery
Perform the Analysis phase of ARIES to reconstruct system state at the time of a crash.
6
ARIES Redo for Database Recovery
Perform the Redo phase of ARIES to repeat history and restore database state, including for uncommitted transactions.
7
Rolling Back Transactions with ARIES Undo
Perform the Undo phase of ARIES to roll back any transactions that were active at the time of the crash.
8
Checkpointing and Recovery Time
Explain how checkpointing reduces recovery time by limiting the portion of the log that needs to be processed.
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Concurrency Control
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Columnar Storage and Execution