'Committed transactions' presentation slideshows

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Chapter 10. Transaction Manager Concepts

Chapter 10. Transaction Manager Concepts. Dr. Kien A. Hua. Transaction Manager Concepts. The transaction manager (TM) furnishes the A, C, and D of ACID.

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Database Systems ( ????? )

Database Systems ( ????? ). January 7/9 2007 Happy New Year. Announcement. Final exam covers chapters [8-13,14.4,16,17.1~17.4] Place: CSIE 102/104 Closed book. Crash Recovery. Chapter 18. Overview. Many types of failures: Transaction failure: bad input, data not found, etc.

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Database Systems ( ????? )

Database Systems ( ????? ). January 5, 2010 Happy New Year. Announcement. Last assignment is due today. Final exam covers chapters [8-13,14.4,16,17.1~17.4] How about Chapter 18? Place: CSIE 101/103 Closed book. Crash Recovery. Chapter 18. Overview. Many types of failures:

524 views • 44 slides

CS411 Database Systems

CS411 Database Systems. 12: Recovery obama and eric schmidt http://www.youtube.com/watch?v=k4RRi_ntQc8 sysadmin song http://www.youtube.com/watch?v=udhd9fmOdCs 14th century sysadmin http://www.youtube.com/watch?v=8UXAF-CUmIA. Bad things happen, but the DB contents must live on regardless.

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How can several users access and update the information at the same time?

How can several users access and update the information at the same time?. Real world results. Model. Database system. Processing of Queries/updates. Database management system. Access to stored data. Physical database. Transactions.

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WS Technologies III Transactions

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CS422 Principles of Database Systems Failure Recovery

CS422 Principles of Database Systems Failure Recovery. Chengyu Sun California State University, Los Angeles. ACID Properties of DB Transaction. Atomicity Consistency Isolation Durability. Failure Recovery. Ensure atomicity and durability despite system failures. start transaction;

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Transactions

Transactions. Amol Deshpande CMSC424. Overview. Transaction : A sequence of database actions enclosed within special tags Properties: A tomicity : Entire transaction or nothing C onsistency : Transaction, executed completely, takes database from one consistent state to another

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Recovery from Crashes

Recovery from Crashes. ACID. A transaction is atomic -- all or none property. If it executes partly, an invalid state is likely to result. A transaction, may change the DB from a consistent state to another consistent state. Otherwise it is rejected (aborted).

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Replication Demystified

Replication Demystified. Arie D. Jones Senior Microsoft Consultant Perpetual Technologies, Inc. February 26th, 2008. Speaker Background. Principal Microsoft Consultant for Perpetual Technologies 20 years of programming experience 11 years of experience with SQL

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Transactions

Transactions. A process that reads or modifies the DB is called a transaction . It is a unit of execution of database operations. Basic JDBC transaction pattern Connection conn = ...; conn.setAutoCommit(false); try { ... //JDBC statements } finally { conn.commit(); }.

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A New Cache Management Approach for Transaction Processing on Flash-based Database

A New Cache Management Approach for Transaction Processing on Flash-based Database. Da Zhou 2008-4-23. Outline. Introduction of flash memory/magnetic disk Traditional IO mechanism on magnetic disk Problem statement Our method and Experiments Committed transactions

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Types of Failures Node failure Communication line of failure Loss of a message (or transaction)

Reliability In case of a crash, recover to a consistent (or correct state) and continue processing. Types of Failures Node failure Communication line of failure Loss of a message (or transaction) Network partition Any combination of above.

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Outline

Outline. Introduction Background Distributed DBMS Architecture Distributed Database Design Distributed Query Processing Distributed Transaction Management Transaction Concepts and Models Distributed Concurrency Control Distributed Reliability Building Distributed Database Systems (RAID)

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Lecture 13: Recovery

Lecture 13: Recovery. Wednesday, February 2, 2005. Outline. Recovery using undo logging 17.2 Redo logging 17.3 Redo/undo 17.4. Checkpointing. Checkpoint the database periodically Stop accepting new transactions Wait until all current transactions complete Flush log to disk

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Database Concurrency Control and Recovery

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Database Concurrency Control and Recovery

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IT 344: Operating Systems Winter 2008 Module 16 Journaling File Systems

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CSE 451: Operating Systems Spring 2012 Journaling File Systems

CSE 451: Operating Systems Spring 2012 Journaling File Systems. Mark Zbikowski Gary Kimura. Quickie Review. Original Bell Labs UNIX file system a simple yet practical design exemplifies engineering tradeoffs that are pervasive in system design elegant but slow

275 views • 10 slides