'View serializable' diaporamas de présentation

Chapter 20

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More About Transaction Management

More About Transaction Management. Chapter 10. Contents. Transactions that Read Uncommitted Data View Serializability Resolving Deadlocks Distributed Databases Long-Duration Transactions. The Dirty-Data Problem.

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Transactions or Concurrency Control

Transactions or Concurrency Control. Introduction. A program which operates on a DB performs 2 kinds of operations: Access to the Database (Read/Write) Memory operations. sailors. Reserves. Main Memory. DISK. Read + Memory operations. Read operation. Read operation. Memory operations.

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CS 277: Database System Implementation Notes 11: View Serializability

CS 277: Database System Implementation Notes 11: View Serializability. Arthur Keller. View Serializability. Conflict equivalent View equivalent Conflict serializable View serializable. Motivating example. Schedule Q T 1 T 2 T 3 Read(A) Write(A) Write(A)

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Chapter 15: Transactions

Chapter 15: Transactions. Transaction Concept Transaction State Implementation of Atomicity and Durability Concurrent Executions Serializability Recoverability Implementation of Isolation Transaction Definition in SQL Testing for Serializability. Transaction Concept. Transaction

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ICS 214B: Transaction Processing and Distributed Data Management

ICS 214B: Transaction Processing and Distributed Data Management. Lecture 7: View-Serializable Schedules Professor Chen Li. View Serializability. Conflict equivalent View equivalent Conflict serializable View serializable. Motivating example. Schedule Q T 1 T 2 T 3 Read(A)

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Lecture 9- Concurrency Control (continued)

Advanced Databases. Lecture 9- Concurrency Control (continued). Masood Niazi Torshiz Islamic Azad University- Mashhad Branch www.mniazi.ir. Allow data items to be of various sizes and define a hierarchy of data granularities, where the small granularities are nested within larger ones

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Classification of Weak Correctness Criteria for Real-Time Database Applications

Classification of Weak Correctness Criteria for Real-Time Database Applications. 1996. 8. 21 Lee, Kyu-Woong and Park, Seog Sogang Univ., Seoul, Korea. Contents. Introduction and Motivation Forms of Database Consistency VSR and Relaxed Serializability Statewise Serializability(SSR)

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Examples

Examples. Conflict and View S erializable. Is the above schedule conflict serializable ? Is the above schedule view seializable to T3T1T2?. Locking. Using the Wait-Die technique, which transaction will get aborted? Using the Wound-wait technique, which transaction will get aborted?.

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Database Systems ( ????? )

Database Systems ( ????? ). A Quick Review for Final Exam. Storage and Indexing (Ch8-10). Disk space manager Arrange pages on disk (reduce I/O access time) RAID: performance (data striping) & reliability (redundancy) Buffer manager Page replacement algorithms Clock (LRU) algorithm

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