'Committed transaction' diaporamas de présentation

CS 440 Database Management Systems

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Enterprise Database Systems Recovery Security and Authorization

Enterprise Database Systems Recovery Security and Authorization. Technological Educational Institution of Larissa in collaboration with Staffordshire University Larissa 2006. Dr. Georgia Garani garani@teilar.gr Dr. Theodoros Mitakos teo_ms@yahoo.com. Agenda. Recovery techniques

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Enterprise Database Systems Recovery Security and Authorization

Enterprise Database Systems Recovery Security and Authorization. Technological Educational Institution of Larissa in collaboration with Staffordshire University Larissa 200 9. Dr. Georgia Garani Dr. Theodoros Mitakos teo_ms@yahoo.com. Agenda. Recovery techniques

396 views • 38 slides

Transaction

Indra Budi indra@cs.ui.ac.id. Transaction. Exercise. A series of actions to be taken on the database such that either all actions are completed successfully, or none of them can be completed, is known as a(n): a.) checkpoint. b.) log. c.) lock. d.) transaction. e.) concurrent.

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Homework 4

Homework 4. Code for word count http://grepcode.com/file/repository.cloudera.com/content/repositories/releases/com.cloudera.hadoop/hadoop-examples/0.20.2-320/org/apache/hadoop/examples/WordCount.java# WordCount. Data Bases in Cloud Environments. Based on: Md . Ashfakul Islam

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ACID

ACID. 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).

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transactions and concurrency control

transactions and concurrency control. Sadhna Kumari. OUTLINE. ACID Properties 2-Phase Commit Protocol TPS Serializability Concurrency Control Protocols Current Research Future References. ACID PROPERTIES. Atomicity: A transaction is either performed entirely or not at all.

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