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Isolation in Relational Databases

Isolation in Relational Databases

Isolation in Relational Databases. Chapter 24. What’s Different About Locking in Relational Databases?. In the simple databases we have been studying, accesses are made to named items (e.g. r(x) ) . x can be locked

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1.15k views • 97 slides
Isolation in Relational Databases

Isolation in Relational Databases

Isolation in Relational Databases. Chapter 24. What’s Different About Locking in Relational Databases?. In the simple databases we have been studying, accesses are made to named items (e.g. r(x) ) . x can be locked

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1.31k views • 97 slides
Chapter 21

Chapter 21

Chapter 21. Isolation in Relational Databases. What’s Different About Locking in Relational Databases?. In the simple databases we have been studying, accesses are made to a named item (for example r(x )). x can be locked

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1.21k views • 94 slides
Transactions

Transactions

Transactions. Source: “Enterprise JavaBeans, 3rd Edition”, Richard Monson-Haefel. Transaction Definition. Unit of work that accesses one or more shared resources (usually databases) set of one or more activities related to each other must be completed together or not at all

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567 views • 53 slides
Lecture 10: Granularity of Locks & Degrees of Consistency

Lecture 10: Granularity of Locks & Degrees of Consistency

Lecture 10: Granularity of Locks & Degrees of Consistency. Sept. 27, 2006 ChengXiang Zhai. Most slides are adapted from Kevin Chang’s lecture slides. Transactions. Transactions: each as a “program” of atomic database operations atomic units of database transformation & recovery

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556 views • 27 slides
Lecture 9: Granularity of Locks & Degrees of Consistency

Lecture 9: Granularity of Locks & Degrees of Consistency

Lecture 9: Granularity of Locks & Degrees of Consistency. Sept. 26, 2007 ChengXiang Zhai. Most slides are adapted from Kevin Chang’s lecture slides. Transactions. Transactions: each as a “program” of atomic database operations atomic units of database transformation & recovery

★ ★ ★ ★ ★

530 views • 27 slides

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