'Conflict equivalent' presentation slideshows

CS 245: Database System Principles Notes 09: Concurrency Control

1.61k views • 149 slides

CS 245: Database System Principles Notes 09: Concurrency Control

1.59k views • 147 slides

CS 245: Database System Principles Notes 09: Concurrency Control

1.29k views • 114 slides

CS 277: Database System Implementation Notes 09: Concurrency Control

1.24k views • 113 slides

CS 245: Database System Principles Notes 09: Concurrency Control

1.25k views • 113 slides

CSE232A: Database System Principle Concurrency Control

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CSE232A: Database System Principle Concurrency Control

1.01k views • 94 slides

Notes 09: Transaction Processing

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CS162 Operating Systems and Systems Programming Lecture 18 Transactions

CS162 Operating Systems and Systems Programming Lecture 18 Transactions. April 4, 2011 Ion Stoica http://inst.eecs.berkeley.edu/~cs162. Goals for Today. Transactions, concurrency control Two-phase lock Strict two-phase lock. Note: Some slides and/or pictures in the following are

475 views • 47 slides

Transactions

451 views • 35 slides

Controlled concurrency

Controlled concurrency. Now we start looking at what kind of concurrency we should allow We first look at uncontrolled concurrency and see what happens We look at 3 bad examples We then look at how we can understand whether concurrency is OK or not. Then we look at how to control concurrency.

537 views • 33 slides

Concurrency

Concurrency. Correctness Principle. 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).

335 views • 28 slides

Chapter 15: Transactions

Chapter 15: Transactions. Loc Hoang CS 157B. Definition. A transaction is a discrete unit of work that must be completely processed or not processed at all. Example: Transferring funds from a checking account to a saving account. Desirable Properties.

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Concurrency Control 18.1 Serial and Serializable Schedules ~ 18.2 Conflict-Serializability

Concurrency Control 18.1 Serial and Serializable Schedules ~ 18.2 Conflict-Serializability. 2008. 5. 21 ??? ??? ??? ? ???? ??? ?????. Concurrency Control. ?? Transactions ? ????? ?? DB ? inconsistent ? ? ? ?? Transaction User ? application ? ?? ???? action ? ???

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CS4432: Database Systems II

CS4432: Database Systems II. Lecture #21 Concurrency Control : Theory. Professor Elke A. Rundensteiner. Concepts. Transaction : sequence of r i (x), w i (x) actions Conflicting actions : read/write on same resource A: r 1(A) w 2(A) w 1(A)

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Conflict-Serializability (section 18.2 of Concurrency Control)

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