PPT-1 18.2: Conflict-Serializability

2 182 ConflictSerializability 1821 Conflicts 1822 Precedence Graphs amp a Test for ConflictSerializability 1823 Why the PrecedenceGraph Test Works 3 182 ConflictSerializability. Equivalent schedules For any database state the effect on the set of objects in the database of executing the first schedule is identical to the effect of executing the second schedule Serializable schedule A schedule that is equivalent to some se g memory Serializability a group of operations transaction which may be interleaved with operations of another group transaction each operating on a shared resource eg a database Linearizability Herlihy Wing a group of operations transaction not inte Evidence from Nepal. Christine . Valente. University of Sheffield, U.K. .. Gender and Conflict Research Workshop – June 10. th. . 2010. Overview. Introduction. Data. Empirical Strategy. Results. Discussion. 3/28/2011 1 Sexual Conflict Defined “A conflict between the evolutionary interests of individuals of the two sexes” (tarker, 2006, p. 235) Key point: Not between “males as a g Lecture 8. Announcements. Lecture 8 > . Announcements. Scores were quite good overall . for homework! . We’re excited! . Destroy the midterm!. Midterm is with CAs. . We will post on the page how to divide into overflow rooms. Aritra Sengupta. Man Cao. Michael D. Bond. and. Milind Kulkarni. 1. Programming Language Semantics? . Data Races. C++ no guarantee of semantics – “catch-fire” semantics . Java provides weak semantics. Dept. of Computer Science. 15-415 - Database Applications. Concurrency Control, II. (R&G . ch. . 17). Faloutsos. SCS 15-415. 2. Review. DBMSs support . ACID Transaction semantics. .. Concurrency control and Crash Recovery are key components. 2. 18.2 Conflict-Serializability. 18.2.1: Conflicts. 18.2.2: Precedence Graphs & a Test for Conflict-Serializability. 18.2.3: Why the Precedence-Graph Test Works. 3. 18.2 Conflict-Serializability. Presented . by. Mr P J A John. Barrouallie Central Leeward Secondary School. Most people fight or argue when they: . Most people fight or argue over: . One good thing people get from arguing or fighting is: . Karen Gulliford, M.Ed., ACC. March 2017. Today’s Objective. Realize the Impact of Workplace Conflict. Interpret Personal Conflict Behaviors. Define Constructive and Destructive Conflict Behaviors. Develop Constructive Conflict Management Strategies . Presented by Mary Chavez Rudolph & Lisa Neale – ombuds office. July 26, 2012. Today’s Agenda. Introduction/Ombuds Office. Conflict Management Skills. Conflict is Inevitable. Personal / Professional. In a story, conflict is the . struggle . between . opposing. forces.. Protagonist. The . main . character. Antagonist. The character in . conflict. with the main character. External. External Conflict takes place . Outline. Transaction Concept. Transaction State. Concurrent Executions. Serializability. Recoverability. Implementation of Isolation. Transaction Definition in SQL. Testing for Serializability.. Transaction Concept. Jeffrey Helt. ◊. Matthew Burke. ○. , Amit Levy. ◊. , Wyatt Lloyd. ◊. ◊. Princeton University. . ○. Cornell University. Distributed Applications and Services. Web. Database. Service. App.