'Lock upgrade transaction' presentation slideshows

Database Systems ( ????? )

Database Systems ( ????? ). December 24/26, 2007 Lecture 13. Announcement. Assignment #6 will be out on the course webpage later this week. Concurrency Control. Chapter 17 (17.1~17.4). Questions. How to ensure that a schedule is both serializable & recoverable? What is Serializable?

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Database Systems ( ????? )

Database Systems ( ????? ). December 27, 2004 Chapter 17 By Hao-hua Chu ( ??? ). Announcements. Assignment #10 (Crash Recovery) will be (is) out on the course homepage We will cover chapter 17.1 ~ 17.4 only. Final exam period 1.10.2005 ~ 1.15.2005.

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Concurrency Control

279 views • 19 slides

Concurrency Control

272 views • 19 slides

Concurrency Control

Concurrency Control. Lecture 22 Ramakrishnan - Chapter 19. Review. DBMSs support concurrency, crash recovery with: ACID Transactions Log of operations A serial execution of transactions is safe but slow Try to find schedules equivalent to serial execution

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ICS 421 Spring 2010 Transactions & Concurrency Control ( i )

ICS 421 Spring 2010 Transactions & Concurrency Control ( i ). Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. ACID Properties. 4 important properties of transactions Atomicity : all or nothing

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Concurrency Control

Concurrency Control. Chapter 17 Sections 17.1-17.4. Conflict Serializable Schedules. Two schedules are conflict equivalent if: Involve the same actions of the same transactions Every pair of conflicting actions is ordered the same way

197 views • 13 slides