Interview Questions Answers.ORG
Interviewer And Interviewee Guide
Interviews
Quizzes
Home
Quizzes
Interviews Databases Programming Interviews:BtrieveClipperData ModelingData StructuresDatabase AdministrationDatabase Administrator (DBA)Database AnalystDatabase DeveloperDB DevelopmentEDI/Data Integration ExpertFirebirdHierarchicalIBM DB2InformixJava DatabaseMariaDBMicrosoft Access DeveloperMongoDBMS SQL ServerMySQL ProgrammingNetworkNoSQLObject RelationalPostgrePostgreSQLProgressRDBMSRelationalSQLSQL AdministratorSQL and PL/SQLSQL Notification ServicesSQL server 2008SSRSStored ProcedureSybaseTeradata
Copyright © 2018. All Rights Reserved
Java Database Interview Question:
What is a “dirty read”?
Submitted by: AdministratorQuite often in database processing, we come across the situation wherein one transaction can change a value, and a second transaction can read this value before the original change has been committed or rolled back. This is known as a dirty read scenario because there is always the possibility that the first transaction may rollback the change, resulting in the second transaction having read an invalid value. While you can easily command a database to disallow dirty reads, this usually degrades the performance of your application due to the increased locking overhead. Disallowing dirty reads also leads to decreased system concurrency.
Submitted by: Administrator
Submitted by: Administrator
Copyright 2007-2024 by Interview Questions Answers .ORG All Rights Reserved.
https://InterviewQuestionsAnswers.ORG.
https://InterviewQuestionsAnswers.ORG.