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Crash recovery

Crash recovery

Crash recovery. Review: The ACID properties. A tomicity : All actions in the Xaction happen, or none happen. C onsistency : If each Xaction is consistent, and the DB starts consistent, it ends up consistent. I solation : Execution of one Xaction is isolated from that of other Xacts.

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359 views • 28 slides
UNIT 8 Database Recovery

UNIT 8 Database Recovery

UNIT 8 Database Recovery. Contents. 8.1 Introduction 8.2 Transactions 8.3 Transaction Failures and Recovery 8.4 System Failures and Recovery 8.5 Media Failures and Recovery. 8.1 Introduction. Database Recovery: Introduction. The Problem of Database Recovery

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415 views • 26 slides
Crash Recovery

Crash Recovery

Crash Recovery. Review: The ACID properties. A tomicity : All actions in the Xaction happen, or none happen. C onsistency : If each Xaction is consistent, and the DB starts consistent, it ends up consistent. I solation : Execution of one Xaction is isolated from that of other Xacts.

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373 views • 25 slides
DBMS Transactions and Rollback Recovery

DBMS Transactions and Rollback Recovery

DBMS Transactions and Rollback Recovery. Helia / Martti Laiho. Application programs - Sessions (connections) - Transactions - SQL commands. Database Instance. Data Buffer (Buffer pool). DBMS Listener / Server Transaction Manager SQL Engine (parser) Security Manager

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428 views • 8 slides
DBMS Transactions and Rollback Recovery

DBMS Transactions and Rollback Recovery

DBMS Transactions and Rollback Recovery. Helia / Martti Laiho. Application programs - Sessions (connections) - Transactions - SQL commands. Database Instance. Data Buffer (Buffer pool). DBMS Listener / Server Transaction Manager SQL Engine (parser) Security Manager

★ ★ ★ ★ ★

97 views • 8 slides

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