'Strict 2pl' presentation slideshows

Concurrency Control

Concurrency Control. Yanlei Diao UMass Amherst March 27 and 29, 2007. Slides Courtesy of R. Ramakrishnan and J. Gehrke. Outline. Serializability & recoverability Lock management Specialized locking techniques Locking for the phantom problem Efficient B+tree locking Levels of Isolation

951 views • 75 slides

April 9, 2014 Anthony D. Joseph inst.eecs.berkeley/~cs162

700 views • 56 slides

November 13, 2013 Anthony D. Joseph and John Canny inst.eecs.berkeley/~cs162

514 views • 50 slides

Concurrency Control

Concurrency Control. Chapter 17. 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

426 views • 36 slides

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?

406 views • 29 slides

Concurrency Control

Concurrency Control. R&G - Chapter 17. Smile, it is the key that fits the lock of everybody's heart. Anthony J. D'Angelo, The College Blue Book. Review. ACID transaction semantics . Today: focus on Isolation property Serial schedules safe but slow

442 views • 28 slides

Concurrency Control

Concurrency Control. R&G - Chapter 17. Smile, it is the key that fits the lock of everybody's heart. Anthony J. D'Angelo, The College Blue Book. Review. ACID transaction semantics . Today: focus on Isolation property Serial schedules safe but slow

375 views • 26 slides

ICS 321 Spring 2011 Overview of Transaction Processing

ICS 321 Spring 2011 Overview of Transaction Processing. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Transactions in SQL. After connection to a database, a transaction is automatically started

259 views • 15 slides

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

Assignment 3 -- Solution

Assignment 3 -- Solution. Problem 1 H 1 : r 1 [y] r 1 [x] r 2 [x] w 1 [y] c 1 w 2 [y] c 2 H 1 is normally-strict two-phase locked: rl 1 [y] r 1 [y] rl 1 [x] r 1 [x] rl 2 [x] r 2 [x] wl 1 [y] w 1 [y] c 1 ru 1 [x] wu 1 [y ] wl 2 [y] w 2 [y] c 2 ru 2 [x] wu 2 [y]

208 views • 11 slides