Database Recovery

TRAMA

Database Recovery presents an in-depth discussion on all aspects of database recovery. Firstly, it introduces the topic informally to set the intuitive understanding, and then presents a formal treatment of recovery mechanism. In the past, recovery has been treated merely as a mechanism which is implemented on an ad-hoc basis. This book elevates the recovery from a mechanism to a concept, and presents its essential properties. A book on recovery is incomplete if it does not present how recovery is practiced in commercial systems. This book, therefore, presents a detailed description of recovery mechanisms as implemented on Informix, OpenIngres, Oracle, and Sybase commercial database systems. Database Recovery is suitable as a textbook for a graduate-level course on database recovery, as a secondary text for a graduate-level course on database systems, and as a reference for researchers and practitioners in industry.

SOMMARIO

1. Database Fundamentals.- ACID Properties of Transactions.- Transaction Execution.- The Cache Manager.- The Recovery Manager.- Concurrency Control Mechanisms.- Management of Concurrent Execution.- Recoverability.- 2. Formalization of Recovery*.- The Formal Model.- Operations, Events, States, and Histories.- A Hierarchy of Histories.- Specification of Requirements.- Specification of Assurances.- Specification of Recovery Mechanisms.- Sample Proofs.- Dealing with a Specific Recovery Protocol.- Relaxation of the Assumptions made thus far.- 3. Recovery Approaches.- Checkpointing.- Recovery Algorithms.- Performance.- 4. Recovery in Informix.- Logical Logging.- Physical Logging.- Checkpointing.- Fast Recovery.- 5. Recovery in Openingres.- Transaction Recovery.- Page Oriented Recovery.- Transaction Undo.- Transaction Redo.- Transaction Rollforward.- Recovery Methods.- Context-Independent Recovery.- Transaction Rollback.- Redo Recovery.- Rollforward Recovery.- Consistency Points.- Archiver Process.- 6. Recovery in Oracle.- Change Vector and Redo Record.- System Change Numbers.- High, Low, and Stop SCNs.- Log Switching.- Checkpoints.- Checkpoint Processing.- Fast and Slow Checkpoints.- Thread Checkpoint.- Database and Data File Checkpoints.- Log History.- Control Files, Data Files, and Log Files.- Recovery Methods.- Media Recovery.- Database-wide Recovery Options.- Complete vs. Incomplete Recovery.- RESETLOGS Option.- 7. Recovery in Sybase.- Logging.- Recovery Procedures.- recovery overview.- Phases.- DB-level front-ends.- The “do” layer.- References.

ALTRE INFORMAZIONI

• Condizione: Nuovo
• ISBN: 9780792381921
• Collana: Advances in Database Systems
• Dimensioni: 235 x 155 mm
• Formato: Copertina rigida
• Illustration Notes: XI, 94 p.
• Pagine Arabe: 94
• Pagine Romane: xi