Inconsistent analysis-problems of concurrent transactions, Database Management System

Inconsistent Analysis: The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of such a problem. This problem happens when more than one data items are being used for analysis, whereas another transaction has modified some of that value and some are yet to be modified. Therefore, an analysis transaction reads values from the inconsistent state of the database those results in inconsistent analysis.

Therefore, we can conclude that the prime reason of troubles of concurrent transactions is that a transaction reads an inconsistent state of the database that has been formed by other transaction.

But how do we ensure that implementation of two or more transactions have not resulted in a concurrency related problem?

Well one of the commonest techniques used for this purpose is to restrict access to data items that are being written or read by single transaction and is being written by another transaction. This technique is known as locking.

 

Posted Date: 3/12/2013 1:52:27 AM | Location : United States







Related Discussions:- Inconsistent analysis-problems of concurrent transactions, Assignment Help, Ask Question on Inconsistent analysis-problems of concurrent transactions, Get Answer, Expert's Help, Inconsistent analysis-problems of concurrent transactions Discussions

Write discussion on Inconsistent analysis-problems of concurrent transactions
Your posts are moderated
Related Questions
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.

1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict

Explain Dynamic Two-Phase Locking Here a transaction locks a data item instantly earlier than any operation is applied on the data item.  After finishing all the operations on

List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view

Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the

Distributed And Client Server Databases Introduction This unit tells the distributed database systems which are primarily relational and one important execution model: the

1 - Serial RS232 comm port comunication 2 - NanoHTTPD serving a few processed pages 3 - System tray application to indicate status and access configuration forms 4 - SQLit


What is Derived and stored Attribute? Derived and Stored Attribute - In a few cases, two or more attribute values are associated, for example, Age and BirthDate attributes of a

10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the