Backward recovery (undo), Database Management System

Backward Recovery (UNDO):In this system the uncommitted changes made by a transaction to a database are undone.  Instead the system is reset to the last consistent state of database that is free from any errors.

 

                1420_Backward Recovery (UNDO).png

Posted Date: 3/12/2013 5:11:00 AM | Location : United States







Related Discussions:- Backward recovery (undo), Assignment Help, Ask Question on Backward recovery (undo), Get Answer, Expert's Help, Backward recovery (undo) Discussions

Write discussion on Backward recovery (undo)
Your posts are moderated
Related Questions
What is Outer join?  They can be employed while we want to keep all the tuples in R, or all those in S or all those in both relations in the result of the JOIN in spite of of w

Normal 0 false false false EN-IN X-NONE X-NONE


Relations create the database. They must satisfy various properties, like no duplicate tuples, no ordering of tuples, and atomic attributes, etc. Relations that satisfy these basic

Suppose that in an organisation, an employee may do different roles in dissimilar projects. Say, RAM is doing coding in one project and doing designing in another. Suppose that the

Now that she understands more about the benefits of databases, the play-scheme manager would like to extend the play-scheme database to include data for schools and instructors as

Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t

Explain the Cascadeless Schedule A cascadeless schedule is one in which for every pair of transactions Ti and Tj like that Tj reads a data item before written by Ti, the commit

An employee record has the following structure struct employee { int eno; char name[22]; float salary; char dept[10];}; (i) Calculate the record size R in bytes.

01a_Broadway_LastFirst_yyyy-mm-dd Capstone Exercises You work as a production assistant in the office of the Green Man Theatre. One of your duties is to maintain the company datab